Apply the ideal gas law to solve problems Question Ideal gas behavior is reasonable for gases that exhibit: Select the correct answer below: O low pressure O high temperature O both low pressure and high temperature O neither low pressure or high temperature
Answers
Ideal gas behavior is reasonable for gases that exhibit both low pressure and high temperature .
In chemistry, we define the temperature of a substance as the average kinetic power of all of the atoms or molecules of that substance. No longer do all of the debris of a substance have identical kinetic strength. At any given time, the kinetic energy of the debris may be represented by means of a distribution.
Temperature performs a vital function in-hospital treatment (both humans and animals), food, beverages, and agriculture. Our average fitness is regularly reliant upon the temperature in lots of methods as nicely.
The SI unit of temperature as consistent with the global system of devices is Kelvin.
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Related Questions
An organic synthesis to make the pain reliever acetominophen is supposed to produce 280 kg of product but instead produces 70 kg of waste in addition to the acetaminophen. what is the percent yield?
Answers
The theoretical yield in this instance is 280 kg, however the actual yield is only 70 kg. Consequently, the percent yield is calculated as follows: 25% = 70/280 x 100.
How do you find percent yield?We apply the following formula to determine the yield percentage: percent yield = actual yield/theoretical yield x 100.The percentage yield indicates how much product is produced in relation to the maximum mass that may be produced. The percentage of atoms in reactants that go on to generate the intended product is determined by the atom economy of a reaction.The efficiency of a chemical process is gauged by percentage yield. It provides us with information on the percentage of our reactants that effectively converted into a product.Percent yield is a metric that contrasts the amount of product we actually generate with the amount we predict we should produce. There will always be a small amount of product left over after a reaction in a genuine lab. How close we can come is indicated by percent yield.To learn more about yield refer to:
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Qué tipo de energía tiene un sacapuntas
Answers
Answer:
creo q es electrico
Explanation:
a catalysis is defined to do what in chemical reactions?
Answers
By adding a substance known as a catalyst—which is not consumed throughout the reaction and can be recovered in its original form at its conclusion—to a chemical reaction, a method known as catalysis is used to speed up the rate of the reaction.
A catalyst is a chemical that can be included in a reaction to speed up the process without being consumed.Typically, catalysts shorten the activation energy of a process or alter its mechanism.Proteins called enzymes serve as catalysts in biological reactions.Enzymes, acid-base catalysts, and heterogeneous (or surface) catalysts are typical examples of catalysts.Catalysts are compounds that can be included in a reaction to speed up the process without being consumed. They often function by reducing the energy of the transition state, which lowers the activation energy, or by altering the reaction's mechanism. The transition state's nature (and energy) are both altered as a result.
There are catalysts everywhere! Enzymes, which are proteins that function as catalysts, are crucial for many metabolic reactions, including the oxidation of glucose.
Acid-base catalysts and heterogeneous (or surface) catalysts are two more popular categories of catalysts.
Example: Anhydrase carbonic
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the density of dichloromethane, an organic solvent, is 1.325 g/ml. if you mix 50 ml water and 50 ml dichloromethane together in a separatory funnel, which layer would be on top?
Answers
The layer of dichloromethane would be on top because it has a higher density than water.
We need to compare their densities to figure out which layer would rise to the top when 50 mL of water and 50 mL of dichloromethane are combined in a separatory funnel.
Step 1: Verify densities
Dichloromethane has a density of 1.325 g/mL whereas water has a density of 1 g/mL.
Determine which layer is on top in step two.
The water layer will be on top in the separatory funnel because water has a lower density than dichloromethane (1.325 g/mL), which is higher.
Temperature and pressure have an impact on a substance's density. This variation is frequently not very noticeable for solids and liquids, but it is very noticeable for gases. As pressure is applied, an object's density rises, which reduces the object's volume. With a few rare exceptions, as temperature increases, a substance's density decreases as its volume grows. Heating the bottom of a fluid often encourages convection of heat from the bottom to the top due to the reduced density of the heated fluid, which causes it to rise in comparison to the denser unheated material.
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Research the compositions of Pennies. What was the composition of each of your Pennies prior to treatment
Answers
Answer:
History of composition
Years Material Weight (grains)
1944–1946 gilding metal (95% copper, 5% zinc) 48 grains
1947–1962 bronze (95% copper, 5% tin and zinc) 48 grains
1962 – September 1982 gilding metal (95% copper, 5% zinc) 48 grains
October 1982 – present copper-plated zinc (97.5% zinc, 2.5% copper) 38.6 grains
Solutions with high ph values have which of these properties?A) turns litmus paper redB) feels slipperyC) taste sourD) gives off hydrogen gas when reacted with metal
Answers
Solutions with high pH values feel slippery. Option B is correct answer.
When a solution has a high pH, it means that it has a low concentration of hydrogen ions (H+) and a high concentration of hydroxide ions (OH-). The presence of these hydroxide ions is what gives the solution its basic or alkaline properties.
This is because they are basic or alkaline in nature. They do not turn litmus paper red, which is a property of acidic solutions. Tasting sour is also a property of acidic solutions. Giving off hydrogen gas when reacted with metal is a property of some acids, but not of solutions with high pH values.
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How does the radius of calcium compare to the radius of potassium?
Answers
Answer:
Calcium has a smaller radius in comparison to Potassium.
Explanation:
When we move down a group, the atomic radius increases, and when we move from left to right in a period, the atomic radius decreases. Since both Potassium and Calcium are in the 4th period, we have to look left to right. Calcium is to the right of Potassium making the radius smaller.
Arrange the following elements (E, K, P, B) according to increasing atomic radius
Answers
Answer:
B
P
K
Explanation:
K: 203pm
B: 84pm
P: 107pm
There isn't an E on the Periodic Table?!
Calculate the numerical Kc value for the following reaction if the equilibrium mixture contains 0.51 M CO , 0.30 M H2 , 1.8 M CH4 , and 2.0 M H2O.
CO(g) + 3H2 (g) ⇌ CH4 (g) + H2O (g)
Show work
Answers
Answer:
uh i think this is the answer
Explanation:
According to wobble rules, what codons should be recognized by the anticodon 5′-ICC-3′? What amino acid residue do they correspond to?
Answers
Sequences, identified by this tRNA will be 5'-GGA-3' or 5'-GGU-3' or 5'-GGC-3'
In RNA molecules, a wobble base pair is a pairing of two nucleotides that deviates from the Watson-Crick base pair rules. Guanine-uracil (G-U), hypoxanthine-uracil (I-U), hypoxanthine-adenine (I-A), and hypoxanthine-cytosine are the four major wobble base pairs (I-C)
So I can pair with A, U, and C on an anticodon.
Pairings C and G can take place.
A pairs with U while G pairs with C, U and U pairs with A, G.
The specified order is 5′-ICC-3′. As a result, we can state that the tRNA's sequence is 3'-CCI-5'.
I serves as the foundation for this wobbling and can be paired with A, U, or C.
As a result, this tRNA will identify the mRNA with the sequence 5'-GGA-3', 5'-GGU-3', or 5'-GGC-3'.
All these Codons corresponds to the amino acid “Glycine”
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The pressure of a gas sample at 60.0 °C is decreased from 3.40 atm to 2.60 atm by cooling at a constant volume. What is the temperature (in °C) of the gas at 2.60 atm?
Answers
When the pressure of a gas is decreased from 3.40 atm to 2.60 atm, the temperature of the gas will decrease from 60.0 degree celsius to 45.88 degree celsius.
What is Gay-Lussac law?Gay -Lussac law states that the pressure and temperature is in direct proportions. Thus, pressure increases with an increase in temperature. The relation can be mathematically expressed as follows:
P/T = a constant. Hence,
P1/T1 = P2/T2
The initial pressure of the sample is given, 3.46 atm and the initial temperature is 60 °C. The final temperature of the gas when gas the expand to the lower pressure of 2.60 atm is calculated as follows:
\(T_{2} = \frac{P_{2}T_{1}}{P_{1}}\)
= (60 °C× 2.60 atm) / 3.40 atm
= 45.88 °C.
Hence, the final temperature of the gas which is expanded from the pressure of 3.40 atm to 2.60 atm with an initial temperature of 60 °C is 45.88 °C.
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A sample of 3,534 human patients yielded a mean systolic blood pressure of 127.3 mmHg and standard deviation of 19.0. Calculate a 95% confidence interval for systolic blood pressure based on the information provided [show work].
Answers
The 95% confidence interval for the systolic blood pressure, based on the given information, is approximately (126.67, 127.93) mmHg.
To calculate a 95% confidence interval for the systolic blood pressure, we will use the following formula;
Confidence Interval = Mean ± (Critical Value) × (Standard Deviation / √(Sample Size))
First, let's calculate the critical value. Since the sample size is large (n > 30) and the population standard deviation is unknown, we can use the z-score for a 95% confidence level, which corresponds to a z-value of 1.96.
Critical Value = 1.96
Next, we substitute the given values into the formula;
Confidence Interval = 127.3 ± (1.96) × (19.0 / √(3534))
Calculating square root of the sample size:
√(3534) ≈ 59.40
Now, we can calculate the confidence interval;
Confidence Interval = 127.3 ± (1.96) × (19.0 / 59.40)
Confidence Interval = 127.3 ± (1.96) × 0.3208
Calculating the multiplication;
(1.96) × 0.3208 ≈ 0.6297
Confidence Interval ≈ 127.3 ± 0.6297
Finally, we can express the confidence interval;
Confidence Interval ≈ (126.67, 127.93)
Therefore, the 95% confidence interval is approximately (126.67, 127.93) mmHg.
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Particles in a are fixed in place and cannot move. They around a fixed position.
Answers
Answer:
Solids have a set shape and can't flow since their particles can only vibrate in a specific direction. They are unable to travel from one location to another.
Explanation:
According to the forces of attraction,particles are in a fixed place and cannot move. They move around a fixed position in solids.
Forces of attraction is a force by which atoms in a molecule combine. it is basically an attractive force in nature. It can act between an ion and an atom as well.It varies for different states of matter that is solids, liquids and gases.
The forces of attraction are maximum in solids as the molecules present in solid are tightly held while it is minimum in gases as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.
Thus, particles are in a fixed place and cannot move. They move around a fixed position in solids.
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Purchase process: (50) The process begins with a department admin sending a purchase request to the IT department. The IT Manager reviews the request and if approved, requests a quote from Apple, Dell, HP, ASUS and Lenovo. If rejected, the request is sent back to the admin for review and has to be resubmitted to the IT Manager. The best price will be sent to the admin and once approved, the IT manager finalizes the vendor and then prepares the purchase request. The Procurement Supervisor receives the request and issues the purchase order to the vendor. The Procurement Supervisor then reviews the invoice and processing time from the vendor. By the end of the processing time, if the tracking number was not received, the Supervisor cancels the order. If vendor provides the tracking number, Procurement Supervisor collects the product once delivered and simultaneously submits the payment. Once both the steps are done, the process ends as the purchase is completed.
Answers
The purchase process involves steps such as initiating a request, vendor selection, approval, purchase order issuance, product delivery, and payment, ensuring a systematic approach to procurement for accountability and efficiency.
The purchase process consists of several steps:
1. The department admin initiates the process by sending a purchase request to the IT department.
2. The IT Manager reviews the request and decides whether to approve or reject it.
3. If the request is approved, the IT Manager contacts various vendors, such as Apple, Dell, HP, ASUS, and Lenovo, to request quotes.
4. The IT Manager receives the quotes and selects the best price.
5. Once the best price is selected, the IT Manager informs the admin and waits for their approval.
6. If the admin approves, the IT Manager finalizes the vendor selection and prepares the purchase request.
7. The IT Manager then sends the purchase request to the Procurement Supervisor.
8. The Procurement Supervisor receives the request and issues a purchase order to the chosen vendor.
9. The Procurement Supervisor reviews the vendor's invoice and processing time.
10. If the processing time elapses and the tracking number has not been received, the Procurement Supervisor cancels the order.
11. If the vendor provides the tracking number within the processing time, the Procurement Supervisor collects the product once it is delivered.
12. At the same time, the Procurement Supervisor submits the payment to the vendor.
13. Once both steps are completed, the purchase process is considered finished, and the purchase is completed.
This process ensures that there is a clear and systematic approach to purchasing items, from the initial request to the final delivery and payment. Each step is important in maintaining accountability and efficiency in the procurement process.
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An old refrigerator is rated at 500 W how many kilowatt hours of electric energy what does refrigerator use in 30 days assume the refrigerator is running 12 hours per day
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The refrigerator would use 180 kilowatt-hours (kWh) of electric energy over the course of 30 days, assuming it runs for 12 hours each day.
To calculate the kilowatt-hours (kWh) of electric energy used by the refrigerator in 30 days, we need to multiply the power rating by the total running time.
Given:
Power rating of the refrigerator = 500 W
Running time per day = 12 hours
Number of days = 30
First, we need to convert the power rating from watts to kilowatts:
Power rating = 500 W / 1000 = 0.5 kW
Next, we calculate the total energy used in kilowatt-hours (kWh) over the 30-day period:
Energy used = Power rating × Running time × Number of days
Energy used = 0.5 kW × 12 hours/day × 30 days
Energy used = 180 kWh
Therefore, the refrigerator would use 180 kilowatt-hours (kWh) of electric energy over the course of 30 days, assuming it runs for 12 hours each day.
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Hydrazine (N_2H_4) decomposes to produce N_2 and NH_3. How many molecules of NH_3 will be formed if 60 molecules of N_2H_4 decompose into N_2 and NH_3
Answers
80 molecules of \(NH_{3}\) will be formed if 60 molecules of \(N_{2}H_{4}\) decomposes into \(N_{2}\) and \(NH_{3}\)
What are molecules?The smallest particle of a substance has all of the physical and chemical properties of that substance. Molecules are made up of one or more atoms.
Just balance the reaction:
\(3N_{2}H_{4}\to N_{2}+4NH_{3}\)
Now you can see that every 3 molecules of \(N_{2}H_{4}\)4 molecules of \(NH_{3}\).
For 60molecules of \(N_{2}H_{4}\) we scale up these numbers by a factor of 60/3 = 20.
Therefore 4x20 = 80 molecules of \(NH_{3}\) are formed.
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find the ph of the following solutions: 0.32 m hcl and 0.002 m ca(oh)2
Answers
The pH of a solution refers to the degree of acidity or alkalinity of the solution. The pH value ranges from 0 to 14. A solution is acidic when the pH value is less than 7, neutral when the pH value is 7, and basic when the pH value is greater than 7. To find the pH of a solution, one needs to use the formula pH = -log[H+].
For example, if the concentration of H+ is\(10^-2 M\), the pH would be -\(log(10^-2) = 2.\)
Now, let's apply this formula to find the pH of 0.32 M HCl. Since HCl is a strong acid, it completely dissociates into H+ and Cl- ions in water. The balanced chemical equation is:
\(HCl + H2O → H3O+ + Cl-\)
Therefore, the concentration of H+ in the solution is equal to the concentration of HCl, which is 0.32 M. Thus, the pH of the solution is:
pH = -log(0.32) = 0.494
Hence, the pH of the 0.32 M HCl solution is 0.494.
Now let's find the pH of 0.002 M Ca(OH)2. Ca(OH)2 is a sparingly soluble salt that dissociates slightly in water to produce Ca2+ and OH- ions. The balanced chemical equation is:
\(Ca(OH)2 ⇌ Ca2+ + 2OH-\)
The concentration of OH- ions can be calculated using the solubility product constant (Ksp) of Ca(OH)2:
\(Ksp = [Ca2+][OH-]^2 = 5.02 x 10^-6\)
At equilibrium, the concentration of Ca2+ ions is equal to the concentration of OH- ions, which is twice the initial concentration of Ca(OH)2. Therefore:
\([OH-] = √(Ksp/[Ca(OH)2]) = √(5.02 x 10^-6/0.004) = 0.001118 M\)
Thus, the concentration of H+ ions can be calculated using the ion product of water (Kw):
Kw = [H+][OH-] = 1.0 x 10^-14
[H+] = Kw/[OH-] = 1.0 x 10^-14/0.001118 = 8.94 x 10^-12 M
Therefore, the pH of the solution is:
pH = -log(8.94 x 10^-12) = 11.05
Hence, the pH of the 0.002 M \(Ca(OH)2\) solution is 11.05.
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2NaNO3 + PbO → Pb(NO3)2 + Na₂O
What is the mole ratio between
sodium nitrate and sodium oxide?
[?] mol NaNO3
mol Na₂O
Fill in the green blank.
Enter
Answers
The mole ratio of \(NaNO_3\) to \(Na_2O\) is 2:1 in the balanced equation
The reasonable compound condition\(2NaNO_3 + PbO → Pb(NO_3)_2 + Na_2O\) shows that two moles of sodium nitrate\((NaNO_3)\) respond with one mole of lead oxide \((PbO)\)to create one mole of sodium oxide \(Na_2O\) and one mole of lead nitrate\((Pb(NO_3)_2)\) .
In this way, the mole proportion of \(NaNO_3\) to \(Na_2O\)is 2:1. This intends that for each two moles of \(NaNO_3\) utilized, one mole of\(Na_2O\) is delivered.
This mole proportion is significant in deciding how much \(Na_2O\)delivered when a known measure of \(NaNO_3\) is utilized. For instance, assuming we have 2 moles of \(NaNO_3\), we can establish that we will deliver 1 mole of \(Na_2O\). Assuming that we have 4 moles of\(NaNO_3\) , we will create 2 moles of \(Na_2O\).
Knowing the mole proportion likewise permits us to compute the hypothetical yield of \(Na_2O\) in light of how much \(NaNO_3\) utilized. In any case, practically speaking, the genuine yield might contrast because of exploratory mistake or different elements.
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Answer:
Explanation:
it's 2:1 the top person is right and how i know that is because when i was in school i have my notes so the top of me is right!!! :)
please help me on this question plizzźzz
what is the green colouring matter found in plants called
Answers
Answer:
the answer is chlorophyll....
Explanation:
if u need it's purpose just let me know
Explanation:
the green colouring matter found in plants is called chlorophyll.
How much so you can be dissolved and 50 mL of water at 30 Celsius see chart:)
Answers
Answer:
The correct answer is - 100 grams.
Explanation:
The solubility graph is a very useful tool because it tells you the amount of solute that can be dissolved per 100 mL of water in order to have a saturated solution of potassium nitrate at a given temperature.
In order to find the solubility of the salt at 30 ∘ C , start from the 30 ∘ C
mark on the graph and move up until you intersect the curve. At the point of intersection, move left until you intersect the y axis and read off the value that you land on which is 200. However, it is for 100 ml so half the value you read:
200/2 = 100 gram .
So, solubility ≈ 100 g / 50 mL water
So, a saturated solution of solute will hold about 100 g of dissolved solute, that is of dissociated solute, per 50 mL of water at 30 ∘ C .
what is the atomic number of nickel
Answers
Answer:
28
Explanation:
A teacher has given a lab student a white chemical sample and asks her to confirm that it contains 7. 03 x 1023 formula units of sodium hydroxide
(NaOH). Using the balance in the laboratory, what mass of NaOH would the student have to find to verify that her teacher was correct? Round your
answer to 3 significant figures.
( ? grams)
Answers
The NaOH given to the student should weigh 46.3 grams.
The formula units can be calculated as moles multiplied by the Avogadro number.
Avogadro number is, 6.023 × 10^23.
The formula units are given to be 7.03 × 10^23.
Formula units = Avogadro Number × Number of moles
7.03 × 10^23 = 6.023 × 10^23 × Number of moles
Number of moles = (7.03 × 10^23)/(6.033 × 10^23)
Number of moles = 1.16
One mole of NaOH has the mass 39.99 grams.
1.16 moles of NaOH has mass = 1.16 × 39.99 grams.
= 46.38 grams.
Hence, the NaOH should weigh 46.3 grams.
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What statement about models of isotopes below is accurate?
A- Each picture represents a different element because they have different numbers of neutrons
B- each picture represents an isotope of carbon because they each have 6 protons
C- each picture represents an isotope of lithium because they each have 3 protons
Answers
Answer : The correct option is (C) each picture represents an isotope of lithium because they each have 3 protons.
Explanation :
Isotope : It is defined as the element that have the same number of protons but have the different number of neutrons of each of the atom.
As in the given picture, the number of protons are same but number of neutrons are different.
As we know that atomic number is either equal to number of protons or electrons for neutral atom.
The number of protons in the given picture are 3.
So, the element will be lithium with atomic number 3 and all are the isotopes of lithium.
Hence, the correct option is (C) each picture represents an isotope of lithium because they each have 3 protons.
can there be a negative number answer in a combined gas law problem
Answers
From each of the following ion concentrations in a solution, predict whether a precipitate will form in the solution. (Hint: Calculate Q and compare Q to Ksp)
a) [Ba2+] = 0.020 M, [F-] = 0.015 M Ksp= 1.0x10-6
BaF2(s) Ba2+(aq) + 2F-(aq)
b) [Pb2+] = 0.035 M, [Cl-] = 0.15M Ksp= 1.6x10-5
PbCl2(s) Pb2+(aq) + 2Cl-(aq)
Answers
If the ionic constant Q is greater than Ksp the solution forms precipitate if it is lower than the solubility constant Ksp then there will be no precipitate. Both of the given solutions forms precipitate.
What is ionic constant?The ionic constant Q of a solution is the product of molar concentrations of reactants. Solubility constant Ksp is the product of solubilities of the reactant ions when the reaction is in equilibrium.
For the first solution Q = 0.020 M × 0.015M = 0.003.
Ksp = 0.000001. Hence, Q is greater than Ksp which means the solution forms precipitate of BaF₂.
For the second solution Q = 0.035 M × 0.15 M =0.0025.
This is greater than Ksp = 1.6 × 10⁻⁵. Hence, this solution forms a precipitate of PbCl₂.
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The molar mass of AI2CI6 is the mass of one mole of the compound. It is also which of the following?
A. The mass of 1 mole of AI and 1 mole of CI
B. The mass of 2 moles of AI and 6 moles CI
C. The mass of ½ mole of AI and ½ mole of CI
D. The mass of ¼ mole of AI and ¾ mole of CI
Answers
Answer:
Is their a picture with the question?
Explanation:
systematic evaluation of materials for post-combustion co2 capture in a temperature swing adsorption process
Answers
The question is about the systematic evaluation of materials for post-combustion CO2 capture in a temperature swing adsorption process.
In a temperature swing adsorption process for post-combustion CO2 capture, materials are evaluated systematically to determine their effectiveness in capturing CO2. Here is a step-by-step explanation of the process:
1. Material selection: Various materials, such as zeolites, activated carbon, metal-organic frameworks (MOFs), and amine-based sorbents, are considered for CO2 capture. Each material has different properties and adsorption capacities.
2. Screening: The selected materials are screened based on specific criteria, such as CO2 adsorption capacity, selectivity, stability, and cost. This helps narrow down the choices to the most promising candidates.
3. Bench-scale testing: The selected materials undergo bench-scale testing to evaluate their performance under controlled conditions. This involves measuring the CO2 adsorption capacity, kinetics, and regeneration efficiency of each material.
4. Process modeling: Computer simulations are used to model the temperature swing adsorption process with different materials. This helps predict the overall performance of the system, including CO2 capture efficiency, energy requirements, and process optimization.
5. Pilot-scale testing: The most promising materials are then tested at a larger scale in a pilot plant. This helps validate their performance and assess any challenges or limitations that may arise during practical implementation.
6. Techno-economic analysis: The performance data obtained from the pilot-scale testing is used to conduct a techno-economic analysis. This involves evaluating the cost-effectiveness of the materials, including their initial investment, operating costs, and potential for scaling up.
7. Material optimization: Based on the results of the evaluations and analysis, further modifications or improvements can be made to the materials to enhance their performance, stability, or cost-effectiveness.
By following this systematic evaluation process, researchers and engineers can identify the most suitable materials for post-combustion CO2 capture in a temperature swing adsorption process.
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According to the bohr model of atomic quantization, what energy do emitted photons have?
Answers
The difference between any two stationary state energy is the right response.
In atoms, the orbits of electrons are quantized. Electrons can travel to a higher orbit by absorbing some energy and can move to a lower orbit by releasing energy. Each orbit has distinct energy. Discrete spectra result from the quantization of the orbits, which also quantizes the energy received or emitted. One of the most common ways to introduce and remove energy from atoms is by photon absorption or emission, and the energy involved is equivalent to the change in electron energy as it moves from one orbit to another.
What is atomic quantization?
Quantized energy refers to the fact that only specific discrete energy values are authorized for electron possession; values outside of these quantized values are forbidden. Although strictly speaking, the Bohr model only functions for one-electron atoms or ions, both contain a very massive nucleus with electrons circulating about it.So the more about atomic quantization visit.
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2.why is the reaction mixture extracted with sodium bicarbonate? give an equation and explain its relevance.
Answers
R - CO - OH + NaHCO3 → R - CO-O- Na+ + H20 + CO2
Here Sodium bicarbonate solution is used to neutralize the excess acetic acid and the acid catalyst in the reaction mixture.
In this reaction the product sodium acetate salt is formed which can be easily removed during work up because of its complete solubility in water. The exact reaction is as follows. Baking soda or bicarbonate of soda is the popular term for sodium bicarbonate, which has the chemical formula NaHCO3 and is also known by its IUPAC designation, sodium hydrogen carbonate[9]. A sodium cation (Na+) and a bicarbonate anion (HCO3) combine to form the salt. In spite of frequently appearing as a fine powder, sodium bicarbonate is a crystalline white solid. It tastes similar to washing soda, with a mildly salty, alkaline flavor (sodium carbonate). Nahcolite is a type of naturally occurring mineral. It is a part of the mineral natron and is present in many mineral springs as a dissolved substance. Due to its long history of use and variety of names, including baking soda, bread soda, cooking soda, and bicarbonate of soda, the salt is frequently seen next to baking powder in supermarkets.
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A 250 ml flask of hydrogen gas is collected at 763 mmHg and 35C by displacement of water from the flask. The vapor pressure of water at 35c is 42. 2 mmhg. How many moles of hydrogen gas are in the flask? (think ideal gas law and dalton's law of partial pressure)
Answers
There are approximately 0.00962 moles of hydrogen gas in the flask.
To determine the number of moles of hydrogen gas in the flask, we can apply the ideal gas law and Dalton's law of partial pressure.
The ideal gas law equation is given as PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.
First, we need to convert the temperature from Celsius to Kelvin by adding 273.15. So, 35°C + 273.15 = 308.15 K.
We also need to consider Dalton's law of partial pressure, which states that the total pressure of a mixture of gases is equal to the sum of the partial pressures of each gas. In this case, the total pressure is 763 mmHg, and the vapor pressure of water at 35°C is 42.2 mmHg. Therefore, the pressure due to hydrogen gas is 763 mmHg - 42.2 mmHg = 720.8 mmHg.
Now we can substitute the values into the ideal gas law equation:
720.8 mmHg * 0.250 L = n * 0.0821 L·atm/(mol·K) * 308.15 K
Solving for n, the number of moles of hydrogen gas, we find:
n = (720.8 mmHg * 0.250 L) / (0.0821 L·atm/(mol·K) * 308.15 K)
n ≈ 0.00962 moles
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