Question 1

What is the advantage of a homogeneous catalyst versus a heterogeneous catalyst in a reaction?

Accepted Answer

A) Homogeneous catalysts are easier to identify with spectroscopy during the reaction. 
B) A homogeneous catalyst is easier to separate from products. 
C) Every particle of a homogeneous catalyst is able to react. 
D) Homogeneous catalysts are less expensive. 
A) Homogeneous catalysts are easier to identify with spectroscopy during the reaction. 
B) A homogeneous catalyst is easier to separate from products. 
C) Every particle of a homogeneous catalyst is able to react. 
D) Homogeneous catalysts are less expensive.

Question 2

Pure substances are used to compute higher ADH than impure mixtures of substances.

Accepted Answer

A) True 
 B)False

Question 3

What is the half-life of a medication for which only 12.5% remains after 24 hours?

Accepted Answer

A) 4 hours 
B) 8 hours 
C) 16 hours 
D) None of the above 
A) 4 hours 
B) 8 hours 
C) 16 hours 
D) None of the above

Question 4

How can the rate of the reaction H2 + Cl2 → 2 HCl be measured?

Accepted Answer

A) By the loss of H2 over time 
B) By how much Cl2 is used overall 
C) By how much HCl is formed 
D) By monitoring the reaction temperature 
A) By the loss of H2 over time 
B) By how much Cl2 is used overall 
C) By how much HCl is formed 
D) By monitoring the reaction temperature

Question 5

If 600 mg of a pain medication are administered, and 75 mg remain in the patient after 48 hours, what is the drug's half-life?

Accepted Answer

A) 8 hours 
B) 16 hours 
C) 24 hours 
D) 36 hours 
A) 8 hours 
B) 16 hours 
C) 24 hours 
D) 36 hours

Question 6

What is the goal of green chemistry in the drug industry?

Accepted Answer

A) Prevention of pollution 
B) The reduction of waste by-products 
C) The use of less energy during drug production 
D) Both b and c 
A) Prevention of pollution 
B) The reduction of waste by-products 
C) The use of less energy during drug production 
D) Both b and c

Question 7

Within chemistry, what is the study of chemical kinetics?

Accepted Answer

A) The temperature of chemical reactions 
B) The concentrations of chemical reactants and products 
C) The rate of chemical reactions 
D) All of the above 
A) The temperature of chemical reactions 
B) The concentrations of chemical reactants and products 
C) The rate of chemical reactions 
D) All of the above

Question 8

Why do less reactant particles form products in many reactions as time goes on?

Accepted Answer

A) There is less energy for the particles to react. 
B) There are smaller areas in which particles can react. 
C) Most particles have already formed products. 
D) None of the above. 
A) There is less energy for the particles to react. 
B) There are smaller areas in which particles can react. 
C) Most particles have already formed products. 
D) None of the above.

Question 9

If an orally administered medicated syrup must be taken every 12 hours because it is down to 6 ¼% of its original strength, what is its half-life?

Accepted Answer

A) 6 hours 
B) 4 hours 
C) 3 hours 
D) 2 hours 
A) 6 hours 
B) 4 hours 
C) 3 hours 
D) 2 hours

Question 10

How are zero-order reactions accelerated?

Accepted Answer

A) By adding more reactants 
B) By decreasing product as it is formed 
C) By adding a catalyst 
D) None of the above 
A) By adding more reactants 
B) By decreasing product as it is formed 
C) By adding a catalyst 
D) None of the above

Question 11

If an insect species needs 520 ADH to develop from egg to larva at 26°C, how many hours will it take to develop?

Accepted Answer

A) 20 
B) 18 
C) 16 
D) 14 
A) 20 
B) 18 
C) 16 
D) 14

Question 12

What is a common problem associated with drug production?

Accepted Answer

A) Low yields of desired products at different synthetic steps 
B) Production of unwanted by-products 
C) The production of large amounts of unwanted chemical waste 
D) All of the above 
A) Low yields of desired products at different synthetic steps 
B) Production of unwanted by-products 
C) The production of large amounts of unwanted chemical waste 
D) All of the above

Question 13

What problem did Codexis originally face when it examined using enzymes in the synthesis of atorvastatin?

Accepted Answer

A) They were too expensive to produce. 
B) There were not enough of them for the commercial process. 
C) They were not sufficiently active for this commercial process. 
D) They did not work in the lock-and-key mechanism as expected. 
A) They were too expensive to produce. 
B) There were not enough of them for the commercial process. 
C) They were not sufficiently active for this commercial process. 
D) They did not work in the lock-and-key mechanism as expected.

Question 14

What is the symbol for half-life?

Accepted Answer

A) hl 
B) Hl½ 
C) t½ 
D) Tl½ 
A) hl 
B) Hl½ 
C) t½ 
D) Tl½

Question 15

What are the two classes of catalysts?

Accepted Answer

A) Heterogeneous and homogeneous 
B) Heterogeneous and chemiluminescent 
C) Homogeneous and chemiluminescent 
D) None of the above 
A) Heterogeneous and homogeneous 
B) Heterogeneous and chemiluminescent 
C) Homogeneous and chemiluminescent 
D) None of the above

Question 16

What do catalysts always do?

Accepted Answer

A) Increase a reaction yield 
B) Speed up a reaction 
C) Get consumed in the reaction 
D) Lower the energy of the reactants 
A) Increase a reaction yield 
B) Speed up a reaction 
C) Get consumed in the reaction 
D) Lower the energy of the reactants

Question 17

What is the half-life of a medication that decreases from a 400-mg dose to a 25-mg dose in 4 hours?

Accepted Answer

A) 4 hours 
B) 2 hours 
C) 1 hour 
D) None of the above 
A) 4 hours 
B) 2 hours 
C) 1 hour 
D) None of the above

Question 18

What in blood increases the reaction rate of luminal and hydrogen peroxide?

Accepted Answer

A) Hemoglobin 
B) Iron 
C) Globin 
D) Heme 
A) Hemoglobin 
B) Iron 
C) Globin 
D) Heme

Question 19

What do enzymes generally do when used in and for synthetic chemical reactions?

Accepted Answer

Allow the reaction t

Question 20

How does the concentration of a reactant influence a zero-order reaction?

Accepted Answer

A) It increases the rate. 
B) It decreases the rate. 
C) It does not affect the rate. 
D) There is not enough information to tell. 
A) It increases the rate. 
B) It decreases the rate. 
C) It does not affect the rate. 
D) There is not enough information to tell.

What is the advantage of a homogeneous catalyst versus a heterogeneous catalyst in a reaction?

Pure substances are used to compute higher ADH than impure mixtures of substances.

What is the half-life of a medication for which only 12.5% remains after 24 hours?

How can the rate of the reaction H₂ + Cl₂ → 2 HCl be measured?

If 600 mg of a pain medication are administered, and 75 mg remain in the patient after 48 hours, what is the drug's half-life?

What is the goal of green chemistry in the drug industry?

Within chemistry, what is the study of chemical kinetics?

Why do less reactant particles form products in many reactions as time goes on?

If an orally administered medicated syrup must be taken every 12 hours because it is down to 6 ¼% of its original strength, what is its half-life?

How are zero-order reactions accelerated?

If an insect species needs 520 ADH to develop from egg to larva at 26°C, how many hours will it take to develop?

What is a common problem associated with drug production?

What problem did Codexis originally face when it examined using enzymes in the synthesis of atorvastatin?

What is the symbol for half-life?

What are the two classes of catalysts?

What do catalysts always do?

What is the half-life of a medication that decreases from a 400-mg dose to a 25-mg dose in 4 hours?

What in blood increases the reaction rate of luminal and hydrogen peroxide?

What do enzymes generally do when used in and for synthetic chemical reactions?

How does the concentration of a reactant influence a zero-order reaction?

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 the advantage of a homogeneous catalyst versus a heterogeneous catalyst in a reaction?

Pure substances are used to compute higher ADH than impure mixtures of substances.

What is the half-life of a medication for which only 12.5% remains after 24 hours?

How can the rate of the reaction H2 + Cl2 → 2 HCl be measured?

If 600 mg of a pain medication are administered, and 75 mg remain in the patient after 48 hours, what is the drug's half-life?

What is the goal of green chemistry in the drug industry?

Within chemistry, what is the study of chemical kinetics?

Why do less reactant particles form products in many reactions as time goes on?

If an orally administered medicated syrup must be taken every 12 hours because it is down to 6 ¼% of its original strength, what is its half-life?

How are zero-order reactions accelerated?

If an insect species needs 520 ADH to develop from egg to larva at 26°C, how many hours will it take to develop?

What is a common problem associated with drug production?

What problem did Codexis originally face when it examined using enzymes in the synthesis of atorvastatin?

What is the symbol for half-life?

What are the two classes of catalysts?

What do catalysts always do?

What is the half-life of a medication that decreases from a 400-mg dose to a 25-mg dose in 4 hours?

What in blood increases the reaction rate of luminal and hydrogen peroxide?

What do enzymes generally do when used in and for synthetic chemical reactions?

How does the concentration of a reactant influence a zero-order reaction?

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 can the rate of the reaction H₂ + Cl₂ → 2 HCl be measured?