Question 1

The slow step in the multistep mechanism of a reaction ________.

Accepted Answer

A)  controls the rate at which the products are formed 
B)  is the only step that involves the breaking of bonds 
C)  is equally significant in measuring the rate 
D)  is insignificant in the formation of products 
A)  controls the rate at which the products are formed 
B)  is the only step that involves the breaking of bonds 
C)  is equally significant in measuring the rate 
D)  is insignificant in the formation of products

Question 2

The magnitude (size) of the energy of activation for the reverse reaction is exactly identical as it is for the forward reaction in an exothermic (or endothermic) process.

Accepted Answer

A) True 
 B)False

Question 3

The overall order of this reaction is ________. A + B + C → Products
Rate = k[A]1[B]-1[C]2

Accepted Answer

A)  2 
B)  3 
C)  4 
D)  5 
A)  2 
B)  3 
C)  4 
D)  5

Question 4

Which of the following may be considered as biochemical catalysts?

Accepted Answer

A)  carbohydrates 
B)  DNA 
C)  enzymes 
D)  lipids 
A)  carbohydrates 
B)  DNA 
C)  enzymes 
D)  lipids

Question 5

Which of the following reaction coordinate diagrams represents a chemical reaction that is endothermic?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 6

A catalyst can be recovered at the end of the reaction.

Accepted Answer

A) True 
 B)False

Question 7

In order for a chemical reaction to occur, ________.

Accepted Answer

A)  the reactants must be in sufficient concentration 
B)  the products must be of lower energy than the reactants 
C)  the reactants must be of lower energy than the products 
D)  the reactants must possess sufficient energy to overcome the barrier of the activation energy 
A)  the reactants must be in sufficient concentration 
B)  the products must be of lower energy than the reactants 
C)  the reactants must be of lower energy than the products 
D)  the reactants must possess sufficient energy to overcome the barrier of the activation energy

Question 8

It is possible to determine a given reaction's mechanism without performing any experiments of any kind.

Accepted Answer

A) True 
 B)False

Question 9

A lower energy of activation leads to more products favored in the reaction.

Accepted Answer

A) True 
 B)False

Question 10

If the products have a higher energy than the reactants ________.

Accepted Answer

A)  the reaction is exothermic 
B)  the reaction is endothermic 
C)  the reactants have less energy than the products 
D)  both B and C 
A)  the reaction is exothermic 
B)  the reaction is endothermic 
C)  the reactants have less energy than the products 
D)  both B and C

Question 11

Match the rate of each reaction with the overall order .
-Rate = k[A]1[B]2

Accepted Answer

A) 3 
B) 1 
C) 0 
D) 2 
E) 4 
A) 3 
B) 1 
C) 0 
D) 2 
E) 4

Question 12

Consider the reaction C → D with the following data: Energy of reactants = 30 kJ/mole;
Energy of products = 20 kJ/mole;
Energy of transition state = 60 kJ/mole.
The reaction is ________, has a heat of reaction of ________kJ/mole, and the energy of activation is ________ kJ/mole.

Accepted Answer

A)  exothermic; -10; 30 
B)  endothermic; 10; 30 
C)  exothermic; 40; 30 
D)  endothermic; 40; 30 
A)  exothermic; -10; 30 
B)  endothermic; 10; 30 
C)  exothermic; 40; 30 
D)  endothermic; 40; 30

Question 13

Match the rate of each reaction with the overall order .
-Rate = k[A]3/[B]

Accepted Answer

A) 3 
B) 1 
C) 0 
D) 2 
E) 4 
A) 3 
B) 1 
C) 0 
D) 2 
E) 4

Question 14

Which of the following is an example of a substitution reaction?

Accepted Answer

A)      OH +   →     Br +   
B)    - +     +   →   +   +   O 
C)  2Mg +   → 2MgO 
D)    +   → 2HI 
A)      OH +   →     Br +   
B)    - +     +   →   +   +   O 
C)  2Mg +   → 2MgO 
D)    +   → 2HI

Question 15

Match the rate of each reaction with the overall order .
-Rate = k[A]3[B]0

Accepted Answer

A) 3 
B) 1 
C) 0 
D) 2 
E) 4 
A) 3 
B) 1 
C) 0 
D) 2 
E) 4

Question 16

In the diagram above, the containers shown (Box A and Box B) contain exactly the same number of the same reactant molecules and are at the same temperature. In which box will the rate of reaction be faster?

Accepted Answer

A)  Box A 
B)  Box B 
C)  Rate is about the same in each box. 
D)  No way to tell which is faster from this picture. 
A)  Box A 
B)  Box B 
C)  Rate is about the same in each box. 
D)  No way to tell which is faster from this picture.

Question 17

The overall order is ________. Rate = k[A]2[B]1

Accepted Answer

A)  -1 
B)  0 
C)  2 
D)  3 
A)  -1 
B)  0 
C)  2 
D)  3

Question 18

In the diagram above, the two containers shown (Box A and Box B) have exactly the same size (volume), are held at the same temperature, and contain the same reactant molecules (dots). In which box will the rate of reaction be faster?

Accepted Answer

A)  Box A 
B)  Box B 
C)  The rate will be about the same in each box. 
D)  There is no way to tell which will be faster from this diagram. 
A)  Box A 
B)  Box B 
C)  The rate will be about the same in each box. 
D)  There is no way to tell which will be faster from this diagram.

Question 19

Doubling the concentration of A leads to doubling the rate, while doubling the concentration of B has no effect on the rate. The rate equation is, therefore, ________. A + B → C

Accepted Answer

A)  Rate = k[A][B] 
B)  Rate = k[A] 
C)  Rate = k[A]2 
D)  Rate = k[A]2[B] 
A)  Rate = k[A][B] 
B)  Rate = k[A] 
C)  Rate = k[A]2 
D)  Rate = k[A]2[B]

Question 20

Which of the following statements is false?

Accepted Answer

A)  The rate determining step is always the slowest step in a multistep mechanism. 
B)  The rate constant always changes with a variation in temperature. 
C)  The energy of activation affects the speed of reaction. 
D)  The rate of a reaction is independent of the concentration of reactants. 
A)  The rate determining step is always the slowest step in a multistep mechanism. 
B)  The rate constant always changes with a variation in temperature. 
C)  The energy of activation affects the speed of reaction. 
D)  The rate of a reaction is independent of the concentration of reactants.

The slow step in the multistep mechanism of a reaction ________.

The magnitude (size) of the energy of activation for the reverse reaction is exactly identical as it is for the forward reaction in an exothermic (or endothermic) process.

The overall order of this reaction is ________. A + B + C → Products Rate = k[A]1[B]-1[C]2

Which of the following may be considered as biochemical catalysts?

Which of the following reaction coordinate diagrams represents a chemical reaction that is endothermic?

A catalyst can be recovered at the end of the reaction.

In order for a chemical reaction to occur, ________.

It is possible to determine a given reaction's mechanism without performing any experiments of any kind.

A lower energy of activation leads to more products favored in the reaction.

If the products have a higher energy than the reactants ________.

Match the rate of each reaction with the overall order . -Rate = k[A]1[B]2

Consider the reaction C → D with the following data: Energy of reactants = 30 kJ/mole; Energy of products = 20 kJ/mole; Energy of transition state = 60 kJ/mole. The reaction is , has a heat of reaction of kJ/mole, and the energy of activation is kJ/mole.

Match the rate of each reaction with the overall order . -Rate = k[A]3/[B]

Which of the following is an example of a substitution reaction?

Match the rate of each reaction with the overall order . -Rate = k[A]3[B]0

In the diagram above, the containers shown (Box A and Box B) contain exactly the same number of the same reactant molecules and are at the same temperature. In which box will the rate of reaction be faster?

The overall order is ________. Rate = k[A]2[B]1

In the diagram above, the two containers shown (Box A and Box B) have exactly the same size (volume), are held at the same temperature, and contain the same reactant molecules (dots). In which box will the rate of reaction be faster?

Doubling the concentration of A leads to doubling the rate, while doubling the concentration of B has no effect on the rate. The rate equation is, therefore, ________. A + B → C

Which of the following statements is false?

What Is Chemistry

The Numerical Side of Chemistry

The Evolution of Atomic Theory

The Modern Model of the Atom

Chemical Bonding and Nomenclature

The Shape of Molecules

Intermolecular Forces and the Phases of Matter

Chemical Reactions

Stoichiometry and the Mole

Electron Transfer in Chemical Reactions

What If There Were No Intermolecular Forces - the Ideal Gas

Solutions

Chemical Equilibrium

Electrolytes, Acids, and Bases

Nuclear Chemistry

The Chemistry of Carbon

Synthetic and Biological Polymers

Filters

Exam 13: When Reactants Turn Into Products

The slow step in the multistep mechanism of a reaction ________.

The magnitude (size) of the energy of activation for the reverse reaction is exactly identical as it is for the forward reaction in an exothermic (or endothermic) process.

The overall order of this reaction is ________. A + B + C → Products Rate = k[A]1[B]-1[C]2

Which of the following may be considered as biochemical catalysts?

Which of the following reaction coordinate diagrams represents a chemical reaction that is endothermic?

A catalyst can be recovered at the end of the reaction.

In order for a chemical reaction to occur, ________.

It is possible to determine a given reaction's mechanism without performing any experiments of any kind.

A lower energy of activation leads to more products favored in the reaction.

If the products have a higher energy than the reactants ________.

Match the rate of each reaction with the overall order . -Rate = k[A]1[B]2

Consider the reaction C → D with the following data: Energy of reactants = 30 kJ/mole; Energy of products = 20 kJ/mole; Energy of transition state = 60 kJ/mole. The reaction is ________, has a heat of reaction of ________kJ/mole, and the energy of activation is ________ kJ/mole.

Match the rate of each reaction with the overall order . -Rate = k[A]3/[B]

Which of the following is an example of a substitution reaction?

Match the rate of each reaction with the overall order . -Rate = k[A]3[B]0

In the diagram above, the containers shown (Box A and Box B) contain exactly the same number of the same reactant molecules and are at the same temperature. In which box will the rate of reaction be faster?

The overall order is ________. Rate = k[A]2[B]1

In the diagram above, the two containers shown (Box A and Box B) have exactly the same size (volume), are held at the same temperature, and contain the same reactant molecules (dots). In which box will the rate of reaction be faster?

Doubling the concentration of A leads to doubling the rate, while doubling the concentration of B has no effect on the rate. The rate equation is, therefore, ________. A + B → C

Which of the following statements is false?

What Is Chemistry

The Numerical Side of Chemistry

The Evolution of Atomic Theory

The Modern Model of the Atom

Chemical Bonding and Nomenclature

The Shape of Molecules

Intermolecular Forces and the Phases of Matter

Chemical Reactions

Stoichiometry and the Mole

Electron Transfer in Chemical Reactions

What If There Were No Intermolecular Forces - the Ideal Gas

Solutions

Chemical Equilibrium

Electrolytes, Acids, and Bases

Nuclear Chemistry

The Chemistry of Carbon

Synthetic and Biological Polymers

Filters

Consider the reaction C → D with the following data: Energy of reactants = 30 kJ/mole; Energy of products = 20 kJ/mole; Energy of transition state = 60 kJ/mole. The reaction is , has a heat of reaction of kJ/mole, and the energy of activation is kJ/mole.