What is the major organic product obtained from the following sequence of reactions? ch3ch=ch2 hf hno3 h2so4 nacr2o7 h2so4
Answers
The compound "A" further reacted with HNO3 and h2so (Nitration reaction mixture) to produce compound "B".
What is nitration reaction?Nitration is a broad category of chemical reactions used in organic chemistry to add a nitro group to an organic molecule. The phrase is also wrongly used to refer to a distinct technique of creating nitrate esters when nitric acid and alcohols are combined (as occurs in the synthesis of nitroglycerin).Benzene is nitrated using HNO3 in the nitrating mixture. For the nitration of benzene, it serves as a base and supplies the electrophile NO2+ ion. The attacking species is the nitronium ion that is produced.Concentrated nitric acid and concentrated sulfuric acid are combined to create a nitrating mixture. It is used to add nitro groups to the substrate that has been provided. It is a reaction of the electrophilic substitution variety.Nitric acid is activated by sulfuric acid in the first step of nitration (HNO3 H N O 3 ). The activation of nitric acid results in the formation of the nitronium ion. A highly soluble substance that is frequently used as a reactant in chemical reactions is sulfuric acid (H2SO4 H 2 S O 4).The compound "A" further reacted with HNO3 and h2so (Nitration reaction mixture) to produce compound "B".
The compound "B" on further reaction with Strong Oxidizing agent like nacr2o7 h2so4 produces Carboxylic acid.
Alkyl groups that contain benzylic hydrogens undergo Oxidation to acids with strong oxidizing agents.
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Hydrogen reacts with chlorine to form hydrogen chloride (hcl (g), delta.hf = –92.3 kj/mol) according to the reaction below. upper h subscript 2 (g) plus upper c l subscript 2 (g) right arrow 2 upper h upper c l (g). which statement is correct? use delta h r x n equals the sum of delta h f of all the products minus the sum of delta h f of all the reactants.. the enthalpy of the reaction is –184.6 kj, and the reaction is exothermic. the enthalpy of the reaction is –184.6 kj, and the reaction is endothermic. the enthalpy of the reaction is 184.6 kj, and the reaction is endothermic. the enthalpy of the reaction is 184.6 kj, and the reaction is exothermic.
Answers
The correct statement for the given reaction is ΔH of reaction equals the sum of delta Hf of all the products minus the sum of delta Hf of all the reactants.
What is ΔHf?ΔHf stands for the change in the heat of formation, every substance have different value for the heat of formation.
Heat of formation for any substance that is present in their elemental or standard form is always zero. Heat of formation for the HCl is given that –92.3 kJ/mol.
Given chemical reaction is:
H₂ + Cl₂ → 2HCl
Heat of formation of the above reaction will be calculated as:
ΔHf = Sum of ΔHf (products) - Sum of ΔHf (reactants)
ΔHf = -92.3 - 0 = -92.3kJ/mol
Hence, option (1) is correct.
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Answer: The enthalpy of the reaction is 184.6 kJ, and the reaction is endothermic.
Explanation: edge 2022
The material in which a wave travels is called a ____
Answers
Answer:
medium
Explanation:
In what direction is the universe
moving?
1.condensing toward the center
2.expanding out from the center
3.at equilibrium with the center
Answers
Please Help ASAP, any suggestions help
Answers
The correct answer is C. -0.76 V. the potential for this reduction half-reaction is -0.76 V relative to the standard hydrogen electrode.
The correct answer is C. -0.76 V.
The standard reduction potential, denoted as E°, is a measure of the tendency of a species to gain electrons and undergo reduction in a redox reaction. It is expressed in volts (V) and represents the potential difference between the reduction half-reaction and the standard hydrogen electrode (SHE), which is assigned a potential of 0 V.
In the given half-reaction:
Mg2+(aq) + 2e- → Mg(s)
The species undergoing reduction is Mg2+(aq), and it is being reduced to Mg(s) by gaining 2 electrons.
To find the standard reduction potential for this half-reaction, we can refer to standard reduction potential tables. These tables provide a reference for various half-reactions with respect to the standard hydrogen electrode.
In the table, the standard reduction potential for the Mg2+(aq) + 2e- → Mg(s) half-reaction is listed as -0.76 V. This means that Mg2+ has a tendency to be reduced, and the potential for this reduction half-reaction is -0.76 V relative to the standard hydrogen electrode.
Therefore, the correct answer is C. -0.76 V.
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in a titration, 12.060 ml of a 1.087 m weak acid solution are placed in a 125 ml erlenmeyer flask. a 1.114 m solution of naoh (aq) is placed in the buret and filled to the 0.00 ml mark. naoh solution is added to the flask and the buret reading is now 20.561. what is the ph of the solution?
Answers
NaOH solution is added to the flask and the buret reading is now 20.561. The pH of the solution is 9.39.
To find the pH of the solution, we need to calculate the concentration of the weak acid after it has reacted with the strong base.
First, let's calculate the number of moles of NaOH that were added to the flask:
1.114 M x (20.561 mL - 0.00 mL) = 22.931354 mmol NaOH
Since the weak acid and strong base react in a 1:1 mole ratio, we know that 22.931354 mmol of weak acid were also present in the flask
The volume of the solution in the flask is 12.060 mL, or 0.01206 L. Therefore, the concentration of the weak acid in the flask before the titration was:
1.087 M x (12.060 mL / 1000 mL) = 0.01313202 M
Now we can use the concentration of the weak acid and the amount of moles of weak acid to calculate the concentration of the weak acid after the titration:
0.01313202 M - (22.931354 mmol / 0.125 L) = 0.01126778 M
The pH of the solution can be calculated using the pKa of the weak acid:
pH = pKa + log([A-]/[HA])
We'll need to know the pKa of the weak acid to solve the problem. Let's assume the weak acid is acetic acid (CH3COOH), which has a pKa of 4.76.
Substituting the values we have:
pH = 4.76 + log([CH3COO-]/[CH3COOH])
We need to find the ratio of [CH3COO-] (conjugate base) to [CH3COOH] (weak acid).
Since we started with 0.01313202 M of CH3COOH, and the weak acid and strong base react in a 1:1 mole ratio, we know that 22.931354 mmol of CH3COOH reacted, leaving 0.009828666 mol of CH3COOH in the solution.
Since CH3COOH is a weak acid that undergoes partial dissociation in water, we can assume that [CH3COO-] = [OH-] and [CH3COOH] = [H+].
Therefore, [OH-] = [CH3COO-] = x
[H+] = [CH3COOH] = Ka/[OH-] = 1.8 x 10^-5 /
Substituting these values into the equation above:
pH = 4.76 + log(x / 0.009828666)
To solve for x, we'll need to use the quadratic formula because the dissociation of CH3COOH is not complete, making it a weak acid/base problem.
x^2 + 1.14 x 10^-5 x - 2.23 x 10^-11 = 0
Solving this equation yields
x = 5.79 x 10^-7 M
Therefore, the pH of the solution is:
pH = 4.76 + log(5.79 x 10^-7 / 0.009828666) = 9.39
Therefore, the pH of the solution is 9.39.
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Given the equation, 2P + 3Cl2 = 2PCl3. How many grams of PCl3 would be produced if 32.5g of chlorine gas reacted with excess phosphorus ?
Answers
2P + 3Cl2 = 2PCl3 according to the equation. If 32.5g of chlorine gas and too much phosphorus interacted, 42.0g of PCl3 would be created.
How many grams of PCl3 are produced from 32.5 g of Cl2 and excess P?Let's imagine that two reactants, "R" and "S," are involved in a chemical reaction, and that the amount of "S" is finished at the conclusion of the reaction while "R" is still there. The limiting reactant here is the reactant "S." The following diagram illustrates how "P" and "\(Cl_2\)" are having a balanced chemical reaction.
\($$2 \mathrm{P}+3 \mathrm{Cl}_2 \rightarrow 2 \mathrm{PCl}_3$$\)
The balanced chemical reaction states that 2 moles of "P" fully react with 3 moles of \(Cl_2\) moles of PCL . There is an excess of "P." The limiting reactant in this instance is therefore \(Cl_2\).
\($C l_2=\left(\frac{2}{3} \times 0.4577\right)$\)
Amount of PCl produced by a 0.4577 mole produced by a 0.3051 mole. Mathematical formula for the molar mass of PCl 3 is 137.33 g/mol.
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why does replacing a c-cl bond with a c-h bond reduce the atmospheric lifetime of a cfc
Answers
Replacing a C-Cl bond with a C-H bond reduces the atmospheric lifetime of a CFC because C-H bonds are more reactive than C-Cl bonds, leading to faster degradation of the compound.
Replacing a C-Cl bond with a C-H bond in CFCs reduces their atmospheric lifetime. C-Cl bonds are highly stable and unreactive, allowing CFCs to persist in the atmosphere for a long time. However, C-H bonds are weaker and more reactive. In the presence of sunlight and atmospheric radicals, C-H bonds undergo photochemical reactions, breaking down the molecule. These reactions lead to the degradation of the compound into less stable and more water-soluble substances. The increased reactivity of C-H bonds results in a shorter atmospheric lifetime for the compound. This shorter lifetime is beneficial as it limits the compound's ability to reach the stratosphere and cause ozone layer damage. Replacing C-Cl bonds with C-H bonds enhances the compound's susceptibility to degradation, contributing to environmental protection.
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the solubility of oxygen gas in water at 40 ∘c is 1.0 mmol/l of solution. what is this concentration in units of mole fraction?
Answers
The concentration in units of mole fraction is calculated to be 1.80 × 10⁻⁵ when the solubility of oxygen gas in water at 40° C is 1.0 mmol/l of solution.
In the 1 Liter of a solution, the solubility of 1.0 mmol/L can be written as:
= 0.001 mol of oxygen.
However, the moles of water in 1L can be calculated as follows;
We know that 1 L of water = 1000 mL of water.
Lets assume that the density of the water is 1.0 g/mL
density = mass/volume
Making mass the subject of the formula:
Mass = density × volume
Mass = 1.0 g/mL× 1000 mL
Mass of water = 1000 g
number of moles = mass(g)/molar mass
Given the number of moles of water are 1000 g/ 18.02 g/mol
Given the number of moles of water are 55.49 moles
Mole Fraction of oxygen = no. of moles/ total no. of moles in the system
Mole Fraction of oxygen= 0.001 moles/55.49 moles
mole fraction of oxygen = 1.80 × 10⁻⁵.
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which linkages in starch result from condensation reactions?
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Starch is a carbohydrate composed of chains of glucose molecules. The linkages in starch are formed by condensation reactions between two glucose molecules, resulting in the formation of an alpha-1,4-glucosidic bond.
A series of -glucose monomers form a chain to form starch. Its linkage, which is created by the condensation procedure, contains glycosidic links.
Glycosidic bonds in starch and ester bonds in triglycerides.
Ester bonds in triglycerides and glycosidic bonds in starch Both starch and triglycerides include ester linkages. Hydrophobic and polar covalent bonds in triglycerides and starch, respectively Starch's monosaccharide bonds and lipids' glycerol bonds.
One water molecule is created during the condensation reaction that creates a glycosidic link, which occurs when a glycoside is formed. A glycosidic bond breaking in reverse is known as a hydrolysis process.
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Which has more thermal energy, an ice berg or a hot cup of coffee?
Answers
Answer: an iceberg
Explanation: the reason for this is because it has much more mass then a hot cup of coffee even the the temputure of coffee is much warmer
What is ozone hole?
What causes an ozone hole?
Answers
Answer:
Ozon prevents us from UV rays of the sun. Ozone hole means that UV rays are entering the Earth. This results in cancer.
Explanation:
Chlorofluorocarbons are causing this
Answer:
The term ‘ozone hole’ refers to the depletion of the protective ozone layer in the upper atmosphere (stratosphere) over Earth's polar regions. People, plants, and animals living under the ozone hole are harmed by the solar radiation now reaching the Earth's surface—where it causes health problems, from eye damage to skin cancer.
Ozone depletion occurs when chlorofluorocarbons (CFCs) and halons—gases formerly found in aerosol spray cans and refrigerants—are released into the atmosphere.
Air is trapped in a cylinder fitted with a piston that occupies 150.5 mL at 1.12 atm pressure. What is the new volume when the piston is depressed, increasing the pressure by 15%?
Answers
Answer:
New volume V2 = 120.4 ml
Explanation:
Given:
Pressure P1 = 1.12 atm
New pressure P2 = 1.12[1+0.25] = 1.4 atm
Old volume V1 = 150.5 ml
Find:
New volume V2
Computation:
P1V1 = P2V2
(1.12)(150.5) = (1.4)(V2)
V2 = 120.4 ml
New volume V2 = 120.4 ml
Noah added yeast and sugar to lukewarm water and placed it in a flask. He stretched a balloon over the opening of the flask. After several minutes, he noticed small bubbles rising along the side of the flask as the balloon slowly began to inflate. Noah concluded that —
Answers
Answer:
There was a chemical reaction
Explanation:
there was bubbles on the side of the flask
The car has a rechargeable battery to drive it’s motor. The rechargeable battery provided a potential difference of 330 volts and can store up to 64 mega Jules it takes 8 hours for the battery to receive a full charge assume that the charging process is 100% efficient calculate the total charge the flows while the battery is being charged
Answers
The total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.
To calculate the total charge that flows while the battery is being charged, we can use the relationship between electrical energy, potential difference, and charge.
The electrical energy (E) stored in the battery is given as 64 mega Jules (64 MJ). The potential difference (V) provided by the battery is 330 volts. We know that the energy (E) is equal to the product of the potential difference (V) and the charge (Q):
E = V * Q
Since the charging process is 100% efficient, all the electrical energy supplied is stored in the battery. Therefore, we can rearrange the equation to solve for the charge (Q):
Q = E / V
Substituting the given values, we have:
Q = 64 MJ / 330 V
To perform the calculation, we need to convert mega Jules (MJ) to joules (J) since the SI unit of energy is joules. One mega Joule is equal to 1 million joules:
Q = (64 * 10^6 J) / 330 V
Calculating the division:
Q ≈ 193,939.39 Coulombs
Therefore, the total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.
This value represents the quantity of electric charge transferred during the charging process, and it indicates the amount of electricity that enters the battery.
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Which of the four plans of St. Peter’s Basilica is represented in the image below? A plan of Saint Peter's Basilica. The plan has one long hallway and three short hallways in the shape of a cross. The outside of the three short hallways are arched. The long hallway has a rectangular entrance. a. Old Saint Peter’s Basilica b. Bramante’s plan c. Michelangelo’s plan d. Maderno’s plan
Answers
Answer:
d. Maderno’s plan
Explanation:
This is the final plan of the St. Peter’s Basilica, the plan of Carlo Maderno, who continued the plans of Michelangelo's plans by adding a nave and a narthex.
Bramante's plan was basically a square, roughly representing the top half of the image provided in the question.
It was modified by Michelangelo who added a section, then extended once more by Maderno who gave it this aspect.
The basilica was finished in 1626, 120 years after the construction began.
Photo attached, please help me if you can :(
Answers
Answer:
I'm pretty sure the ionic structure is C, sorry this is only one answer tho : , (
Explanation:
Can anyone help me on this please !
Answers
Answer:
16.....................
For the reaction, calculate how many moles of the product form when 0. 041 mol
of O2
completely reacts. Assume that there is more than enough of the other reactant. 2Ca(s)+O2(g)→2CaO(s)
Answers
0.082 moles of CaO are produced when 0.041 mol of \(O_2\)completely reacts.
The balanced chemical equation for the reaction is:
2 Ca(s) + \(O_2\)(g) → 2 CaO(s)
0.041 mol \(O_2\)x (2 mol CaO / 1 mol \(O_2\)) = 0.082 mol CaO
A mole is a unit of measurement used to express the amount of a substance. One mole of a substance is defined as the amount of that substance that contains the same number of particles (such as atoms, molecules, or ions) as there are in 12 grams of carbon-12. This number is known as Avogadro's number, which is approximately 6.022 x 10^23.
Using moles, chemists can easily compare and relate the amounts of different substances in a reaction. For example, in a chemical reaction, the reactants may be present in different amounts, but by converting their masses to moles, it is possible to determine the limiting reactant and the theoretical yield of the reaction. Moles are also used to calculate concentrations of solutions, which is important in many chemical processes. The concentration of a solution can be expressed in moles per liter (mol/L) or molarity.
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How can you measure the volume of a solid that does not have a regular shape? What property must the solid NOT have for your method to work?
Answers
Answer:
a
b
Explanation:
if (H+] = 10^-2 M
what will be pH = ?
Answers
pH = -log(10^-2)
pH = 2
If a student begins with 90.6 grams of Mg what would the theoretical yield of MgO in grams would be possible for the student to obtain?
2Mg +02->2MgO
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The theoretical yield of MgO in grams would be 90.6 grams.
What do you mean by theoretical yield?
The theoretical yield is basically the amount of product that is expected to be produced from a given reaction, taking into account the limiting reactant, according to the stoichiometry of the reaction. It is calculated using the balanced equation for the reaction.
This is because the equation given is a 1:1 ratio, meaning that for every 1 mole of Mg, 1 mole of MgO would be produced. Since we know that the given amount of Mg is 90.6 grams, the theoretical yield of MgO would be the same: 90.6 grams.
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Which describes the law of conservation of matter?
O A. Chemical reactions cannot happen.
B. Atoms cannot be created or destroyed in a reaction.
OC. Atoms are not involved in chemical reactions.
OD. Molecules cannot change into other molecules during a reaction.
SUBMIT
Answers
Answer:
answer is B
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The brush used for artificial nail services is made of what type of hair? Select one: a. nylon b. natural c. acrylic d. plastic.
Answers
The brush used for artificial nail services is made the of a. nylon
This type of hair is preferred because it is easy to clean and durable. Nylon hair also has the ability to hold onto liquid products, such as acrylic or gel, without soaking them up too quickly, allowing the nail technician to have more control over the application process. While natural hair brushes may be used for some services, such as gel polish application, they are not ideal for use with acrylics or other liquid nail products as they can absorb too much of the product and become damaged over time.
Plastic brushes are not typically used in artificial nail services, as they are not as effective at holding and applying the products. Overall, a nylon hair brush is the preferred choice for artificial nail services due to its durability, ease of cleaning, and ability to hold liquid products.
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What is nebular theory
Answers
Answer: The nebular theory is an explanation for the formation of solar systems.
Explanation:
where is the atomic number written
Answers
Answer:
The atomic number is written on top of the element symbol.
Explanation:
From top to bottom:
-Atomic Number
-Element Symbol
-Name
-Atomic Mass
~
How much water can be melted with 414. KJ of energy
Answers
Assuming the ice is originally at 0°C, 414 kJ in energy can therefore melt about 1237.1 grams of ice.
How much power is required to melt one kilogramme of water?At its melting point, 1 kilogramme of ice requires 3360000 J in heat energy to become water. Q. ____ heat energy will be needed to dissolve 10 kg of ice now at melting point. (333.55 kJ kg1 is the latent fusion energy of water)
How many kilojoules (kJ) of energy are needed to evaporate one kilogramme of water?Water requires far more energy too evaporate; at air pressure and the usual normal boiling of 100 C, 1 kilogramme or liquid water would require 2256 kJ to turn into steam (water vapor).
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When menthol (CH3OH) undergoes complete combustion in the presence of oxygen (O2), the products are carbon dioxide (CO2) and water (H2O). The reaction is shown below. __CH3OH + __O2 -> __CO2+ __H2O Which of the following choices lists the coefficients that would correctly balance the equation? a. 2,3,2,4 b. 1,2,1,2 c. 2,2,2,3 d. 1,1,1,1
Answers
The balanced chemical equation for the combustion of menthol in the presence of oxygen is shown below.CH\(_{3}\)OH + 1.5O\(^{2}\) → CO\(^{2}\) + 2H\(^{2}\)O
The balanced equation for the combustion of menthol in the presence of oxygen shows that the coefficients required to balance the equation are 1, 1.5, 1, and 2. However, since the number of moles of oxygen is not a whole number, we can multiply the entire equation by 2 to get rid of the fraction as shown below.
2CH\(_{3}\)OH + 3O\(^{2}\) → 2CO\(^{2}\) + 4H\(^{2}\)O
Thus, the correct choice that lists the coefficients that would balance the equation is (a) 2, 3, 2, 4.
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Are the number of neutrons equal to the atomic number?
Answers
The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z).
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how many moles of silver nitrate are needed to produce 6.75 moles of copper (II) nitrate upon reacting with excess copper?
Answers
Answer:
13.50 moles of AgNO₃ are needed to produce 6.75 moles of Cu(NO₃)₂
Explanation:
We state the reactants:
AgNO₃
Cu
Then, the products are:
Cu(NO₃)₂
Ag
The reaction is: 2AgNO₃ + Cu → 2Ag + Cu(NO₃)₂
Ratio is 1:2.
The copper is in excess, so the limiting reactant is the silver nitrate:
1 mol of Cu(NO₃)₂ is produced by 2 moles of AgNO₃
Then, 6.75 moles of copper (II) nitrate would be produced by, the double of moles
(6 75 . 2) /1 = 13.50 moles
Why the microscope is made an inclination joint?
Answers
Answer:
inclination joint This is the joint between the pillar and the arm of the microscope. It is used to tilt the body tube and stage. It is usually best to keep the stage horizontal.
Explanation: