Question 1

What is a reaction intermediate?

Accepted Answer

A) A compound formed in the first step of a reaction but that is immediately consumed. 
B) A compound formed in the midst of a reaction that is not consumed. 
C) A compound formed in the first step of a reaction that is not consumed. 
D) A compound formed in the midst of a reaction but that is immediately consumed. 
A) A compound formed in the first step of a reaction but that is immediately consumed. 
B) A compound formed in the midst of a reaction that is not consumed. 
C) A compound formed in the first step of a reaction that is not consumed. 
D) A compound formed in the midst of a reaction but that is immediately consumed.

Question 2

How will the reaction 2 AgNO3 + Cu → Cu(NO3)2 + 2 Ag proceed with an AgNO3 concentration of 0.30 M, as opposed to a 0.10 M solution?

Accepted Answer

A) Slower at first 
B) Faster at first 
C) Faster when pressurized 
D) Slower throughout 
A) Slower at first 
B) Faster at first 
C) Faster when pressurized 
D) Slower throughout

Question 3

How did Codexis solve the problem of low reacting enzymes in its atorvastatin synthesis?

Accepted Answer

A) They heated the reactions as needed. 
B) They created chemical variations of the necessary enzyme. 
C) They increased the amount of enzyme per reaction. 
D) They did not; this problem still remains. 
A) They heated the reactions as needed. 
B) They created chemical variations of the necessary enzyme. 
C) They increased the amount of enzyme per reaction. 
D) They did not; this problem still remains.

Question 4

What analogy is often used for the enzyme-reactant interaction?

Accepted Answer

A) The protein-amino acid interaction. 
B) A ball-and-stick interaction. 
C) The particle-kinetic energy mechanism. 
D) A lock-and-key mechanism. 
A) The protein-amino acid interaction. 
B) A ball-and-stick interaction. 
C) The particle-kinetic energy mechanism. 
D) A lock-and-key mechanism.

Question 5

When can the increased speed of a reaction be a problem?

Accepted Answer

A) When an explosion occurs 
B) When the reactants stop mixing 
C) When products do not form 
D) When the reaction is cooled 
A) When an explosion occurs 
B) When the reactants stop mixing 
C) When products do not form 
D) When the reaction is cooled

Question 6

How long does it take for the maximum level in the body to occur?

Accepted Answer

A) 1 week 
B) 1 day 
C) 2-3 weeks 
D) 2-3 days 
A) 1 week 
B) 1 day 
C) 2-3 weeks 
D) 2-3 days

Question 7

According to collision theory, what must the molecules of reactants do in order for a reaction to occur?

Accepted Answer

A) Collide 
B) Heat up 
C) Be pressurized 
D) Expand 
A) Collide 
B) Heat up 
C) Be pressurized 
D) Expand

Question 8

What enzyme catalyzes the oxidation of ethanol in the body?

Accepted Answer

A) Alcohol dehydrase (ADH) 
B) Alcohol dehydrogenase (ADH) 
C) Alcohol hydrodeoxygenase (AH
D)  
D) Alcohol hydrogenase (AH
D)  
A) Alcohol dehydrase (ADH) 
B) Alcohol dehydrogenase (ADH) 
C) Alcohol hydrodeoxygenase (AH
D)  
D) Alcohol hydrogenase (AH
D)

Question 9

If the ADH of an insect species' development is 200, and the species usually required 8 hours to develop, how can the development time be cut to 1 hour?

Accepted Answer

A) Increase the temperature from 25°C to 200°C. 
B) Increase the temperature to 100°C and immerse the larvae in a microwave environment. 
C) Utilize eight times the amount of larval samples as the development begins. 
D) It can't; the required temperature is simply too high. 
A) Increase the temperature from 25°C to 200°C. 
B) Increase the temperature to 100°C and immerse the larvae in a microwave environment. 
C) Utilize eight times the amount of larval samples as the development begins. 
D) It can't; the required temperature is simply too high.

Question 10

If an insect species requires 18 hours at 28°C to develop from egg to larva, how many accumulated degree hours is this?

Accepted Answer

A) 540 ADH 
B) 10 ADH 
C) 46 ADH 
D) 504 ADH 
A) 540 ADH 
B) 10 ADH 
C) 46 ADH 
D) 504 ADH

Question 11

What happens to the rate of a first-order reaction when a reactant concentration is doubled?

Accepted Answer

A) Nothing. 
B) It is halved. 
C) It doubles. 
D) It quadruples. 
A) Nothing. 
B) It is halved. 
C) It doubles. 
D) It quadruples.

Question 12

How is the presence of a catalyst represented in an energy level diagram?

Accepted Answer

A) By the letter "C" at the transition state site 
B) By a lowered energy of activation 
C) By a heightened reactant initial energy 
D) By a lowered product final energy 
A) By the letter "C" at the transition state site 
B) By a lowered energy of activation 
C) By a heightened reactant initial energy 
D) By a lowered product final energy

Question 13

The oxidation of ethanol (the alcohol found in alcoholic beverages) by the human body is what type of reaction?

Accepted Answer

A) An acid-base reaction 
B) A neutralization reaction 
C) A first-order reaction 
D) A zero-order reaction 
A) An acid-base reaction 
B) A neutralization reaction 
C) A first-order reaction 
D) A zero-order reaction

Question 14

What is the catalyst for hydrogen peroxide's (H2O2) decomposition when it is placed in a wound?

Accepted Answer

A) Foreign objects in the tissue of the wound 
B) Bacteria in the wound 
C) Scar tissue 
D) Blood 
A) Foreign objects in the tissue of the wound 
B) Bacteria in the wound 
C) Scar tissue 
D) Blood

Question 15

If coal has more energy per gram than nitroglycerin, why isn't its combustion considered an explosion?

Accepted Answer

A) Its lower explosion level (LEL) is too low for it to be considered a true explosion. 
B) It requires too high an ignition temperature. 
C) The rate is too slow. 
D) The concentration is never high enough for an explosion. 
A) Its lower explosion level (LEL) is too low for it to be considered a true explosion. 
B) It requires too high an ignition temperature. 
C) The rate is too slow. 
D) The concentration is never high enough for an explosion.

Question 16

Why is the total amount of heat needed to get to a specific insect growth stage different at high versus low temperatures?

Accepted Answer

A) There is a greater kinetic energy in the higher temperature system. 
B) There are more cells involved at the higher temperatures. 
C) Because the larva requires the higher heat to reach the adult stage. 
D) It isn't. The specific heat is the same, even though the growth rates are different. 
A) There is a greater kinetic energy in the higher temperature system. 
B) There are more cells involved at the higher temperatures. 
C) Because the larva requires the higher heat to reach the adult stage. 
D) It isn't. The specific heat is the same, even though the growth rates are different.

Question 17

Heterogeneous catalysts have the distinct advantage of being easier to mix with reactants than homogeneous solutions.

Accepted Answer

A) True 
 B)False

Question 18

If an insect species needs 486 accumulated degree hours (ADH) to develop from egg to larva, how many hours will it take to develop at 27°C?

Accepted Answer

A) 12 
B) 18 
C) 24 
D) 30 
A) 12 
B) 18 
C) 24 
D) 30

Question 19

At what pH does the Codexis synthesis of atorvastatin operate?

Accepted Answer

A) At low, acidic pH. 
B) At a highly alkaline pH zone. 
C) At a nearly neutral pH. 
D) At a widely variable pH. 
A) At low, acidic pH. 
B) At a highly alkaline pH zone. 
C) At a nearly neutral pH. 
D) At a widely variable pH.

Question 20

What happens to the fraction of molecules able to collide successfully in a system when the system is cooled?

Accepted Answer

A) The fraction is not affected. 
B) The fraction increases. 
C) The fraction decreases. 
D) There is not enough information to tell. 
A) The fraction is not affected. 
B) The fraction increases. 
C) The fraction decreases. 
D) There is not enough information to tell.

What is a reaction intermediate?

How will the reaction 2 AgNO₃ + Cu → Cu(NO₃)₂ + 2 Ag proceed with an AgNO₃ concentration of 0.30 M, as opposed to a 0.10 M solution?

How did Codexis solve the problem of low reacting enzymes in its atorvastatin synthesis?

What analogy is often used for the enzyme-reactant interaction?

When can the increased speed of a reaction be a problem?

How long does it take for the maximum level in the body to occur?

According to collision theory, what must the molecules of reactants do in order for a reaction to occur?

What enzyme catalyzes the oxidation of ethanol in the body?

If the ADH of an insect species' development is 200, and the species usually required 8 hours to develop, how can the development time be cut to 1 hour?

If an insect species requires 18 hours at 28°C to develop from egg to larva, how many accumulated degree hours is this?

What happens to the rate of a first-order reaction when a reactant concentration is doubled?

How is the presence of a catalyst represented in an energy level diagram?

The oxidation of ethanol (the alcohol found in alcoholic beverages) by the human body is what type of reaction?

What is the catalyst for hydrogen peroxide's (H₂O₂) decomposition when it is placed in a wound?

If coal has more energy per gram than nitroglycerin, why isn't its combustion considered an explosion?

Why is the total amount of heat needed to get to a specific insect growth stage different at high versus low temperatures?

Heterogeneous catalysts have the distinct advantage of being easier to mix with reactants than homogeneous solutions.

If an insect species needs 486 accumulated degree hours (ADH) to develop from egg to larva, how many hours will it take to develop at 27°C?

At what pH does the Codexis synthesis of atorvastatin operate?

What happens to the fraction of molecules able to collide successfully in a system when the system is cooled?

Understanding Our World With Chemistry

Matter: Properties, Changes and Measurements

Understanding Atoms

Bonding and Reactions

Chemistry of Bonding: Structure and Function of Drug Molecules

Aqueous Solutions: Part I

Aqueous Solutions: Part II

Organic Chemistry and Polymers

Chemistry of Fire and Heat

Chemistry of Explosions

Nuclear Chemistry: Energy, Medicine, Weapons, and Terrorism

Chemical Equilibrium

Introduction to Biochemistry

Filters

Exam 11: Applications of Chemical Kinetics

What is a reaction intermediate?

How will the reaction 2 AgNO3 + Cu → Cu(NO3)2 + 2 Ag proceed with an AgNO3 concentration of 0.30 M, as opposed to a 0.10 M solution?

How did Codexis solve the problem of low reacting enzymes in its atorvastatin synthesis?

What analogy is often used for the enzyme-reactant interaction?

When can the increased speed of a reaction be a problem?

How long does it take for the maximum level in the body to occur?

According to collision theory, what must the molecules of reactants do in order for a reaction to occur?

What enzyme catalyzes the oxidation of ethanol in the body?

If the ADH of an insect species' development is 200, and the species usually required 8 hours to develop, how can the development time be cut to 1 hour?

If an insect species requires 18 hours at 28°C to develop from egg to larva, how many accumulated degree hours is this?

What happens to the rate of a first-order reaction when a reactant concentration is doubled?

How is the presence of a catalyst represented in an energy level diagram?

The oxidation of ethanol (the alcohol found in alcoholic beverages) by the human body is what type of reaction?

What is the catalyst for hydrogen peroxide's (H2O2) decomposition when it is placed in a wound?

If coal has more energy per gram than nitroglycerin, why isn't its combustion considered an explosion?

Why is the total amount of heat needed to get to a specific insect growth stage different at high versus low temperatures?

Heterogeneous catalysts have the distinct advantage of being easier to mix with reactants than homogeneous solutions.

If an insect species needs 486 accumulated degree hours (ADH) to develop from egg to larva, how many hours will it take to develop at 27°C?

At what pH does the Codexis synthesis of atorvastatin operate?

What happens to the fraction of molecules able to collide successfully in a system when the system is cooled?

Understanding Our World With Chemistry

Matter: Properties, Changes and Measurements

Understanding Atoms

Bonding and Reactions

Chemistry of Bonding: Structure and Function of Drug Molecules

Aqueous Solutions: Part I

Aqueous Solutions: Part II

Organic Chemistry and Polymers

Chemistry of Fire and Heat

Chemistry of Explosions

Nuclear Chemistry: Energy, Medicine, Weapons, and Terrorism

Chemical Equilibrium

Introduction to Biochemistry

Filters

How will the reaction 2 AgNO₃ + Cu → Cu(NO₃)₂ + 2 Ag proceed with an AgNO₃ concentration of 0.30 M, as opposed to a 0.10 M solution?

What is the catalyst for hydrogen peroxide's (H₂O₂) decomposition when it is placed in a wound?