Question 1

The reaction profiles for four reactions are shown below. Which one has the largest activation energy?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
A) I 
B) II 
C) III 
D) IV

Question 2

In a catalyzed reaction, the ________ of the transition state is lowered while the enthalpy change for the reaction remains the same, leading to a faster reaction.

Accepted Answer

The answer of In a catalyzed reaction, the ________ of...

Question 3

Indicate which of the following compounds is not a component of photochemical smog.

Accepted Answer

A) O3 
B) H2O 
C) NO2 
D) NO 
E) organic molecules 
A) O3 
B) H2O 
C) NO2 
D) NO 
E) organic molecules

Question 4

In a catalyzed reaction, the activation energy of the ________ is lowered while the enthalpy change for the reaction remains the same, leading to a faster reaction.

Accepted Answer

The answer of In a catalyzed reaction, the activation energy...

Question 5

The following graph shows the kinetics curves for the reaction of oxygen with hydrogen to form water:   . Which curve is water?

Accepted Answer

A) the dashed curve 
B) the gray curve 
C) the black curve 
D) either the gray or the black curve 
E) Any of these curves could be water. 
A) the dashed curve 
B) the gray curve 
C) the black curve 
D) either the gray or the black curve 
E) Any of these curves could be water.

Question 6

Which of the following is not a possible graph of concentration versus time for a reactant?

Accepted Answer

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

Question 7

Given the following data for the reaction A   F1F1F1S1F1F1F10B, determine the activation energy, Ea, of the reaction. k (M/s)
T (°C)
0)282
277
0)291
627

Accepted Answer

A) 369 J/mol 
B) 2.17 J/mol 
C) 44.4 J/mol 
D) 7.60 J/mol 
E) 95.6 J/mol 
A) 369 J/mol 
B) 2.17 J/mol 
C) 44.4 J/mol 
D) 7.60 J/mol 
E) 95.6 J/mol

Question 8

How many steps are involved in the following reaction?

Accepted Answer

A) None 
B) One 
C) Two 
D) three 
E) cannot be determined 
A) None 
B) One 
C) Two 
D) three 
E) cannot be determined

Question 9

For the reaction 2A   F1F1F1S1F1F1F104B F1F1F1S1F1F1F10 3D, the rate of the reaction in terms of F1F1F1S1F1F1F10B would be written as ________.

Accepted Answer

F1F1F1S1F1F1F101/4

Question 10

For the reaction 2A F1F1F1S1F1F1F10 3B →4C F1F1F1S1F1F1F10 5D, the rate of the reaction in terms of F1F1F1S1F1F1F10D would be written as ________

Accepted Answer

A) (F1F1F1S1F1F1F10   F1F1F1S1F1F1F10) 
B) (F1F1F1S1F1F1F10   F1F1F1S1F1F1F10) 
C) (F1F1F1S1F1F1F10   F1F1F1S1F1F1F10) 
D) (F1F1F1S1F1F1F10   F1F1F1S1F1F1F10)) 
E) (F1F1F1S1F1F1F10   F1F1F1S1F1F1F10) 
A) (F1F1F1S1F1F1F10   F1F1F1S1F1F1F10) 
B) (F1F1F1S1F1F1F10   F1F1F1S1F1F1F10) 
C) (F1F1F1S1F1F1F10   F1F1F1S1F1F1F10) 
D) (F1F1F1S1F1F1F10   F1F1F1S1F1F1F10)) 
E) (F1F1F1S1F1F1F10   F1F1F1S1F1F1F10)

Question 11

Sodium hypochlorite (NaClO) is used as a common disinfectant. It decomposes in a first-order process with a rate constant of 0.10 sF1F1F1S1F1F1F101. How long would it take for an initial concentration of 0.20 M to decrease to 0.07 M ?

Accepted Answer

A) 0.50 s 
B) 5.43 s 
C) 10.5 s 
D) 35.7 s 
E) 92.9 s 
A) 0.50 s 
B) 5.43 s 
C) 10.5 s 
D) 35.7 s 
E) 92.9 s

Question 12

Nitric oxide and nitrogen dioxide are found in photochemical smog. Nitrogen dioxide is formed from nitrogen monoxide in the exhaust of automobile engines. A possible mechanism for this reaction is given below, where equilibrium is quickly established in steps 1 and 2. What is the rate law predicted by this mechanism? Reaction:   Step 1 (fast): NO F1F1F1S1F1F1F10 NO   N2O2
Step 2 (fast): N2O2   N F1F1F1S1F1F1F10 NO2
Step 3 (slow): N F1F1F1S1F1F1F10 O2   F1F1F1S1F1F1F10NO2

Accepted Answer

A) Rate F1F1F1S1F1F1F10 k[NO]2[O2] 
B) Rate F1F1F1S1F1F1F10 k[NO]2 
C) Rate F1F1F1S1F1F1F10 k[NO][O2] 
D) Rate F1F1F1S1F1F1F10 k   
E) Rate F1F1F1S1F1F1F10 k   k 
A) Rate F1F1F1S1F1F1F10 k[NO]2[O2] 
B) Rate F1F1F1S1F1F1F10 k[NO]2 
C) Rate F1F1F1S1F1F1F10 k[NO][O2] 
D) Rate F1F1F1S1F1F1F10 k   
E) Rate F1F1F1S1F1F1F10 k   k

Question 13

The device in automobiles that has decreased NO and partially oxidized hydrocarbons from exhaust gases is termed a ________

Accepted Answer

A) catalytic intermediate. 
B) photochemical inhibitor. 
C) catalytic linker. 
D) nitrogen monoxide reducer. 
E) catalytic converter. 
A) catalytic intermediate. 
B) photochemical inhibitor. 
C) catalytic linker. 
D) nitrogen monoxide reducer. 
E) catalytic converter.

Question 14

Identify the order of each of the following reactions, based on the supplied graphs.

Accepted Answer

a) first-order react

Question 15

The mechanism for the reaction   in the presence of IF1F1F1S1F1F1F10(aq) is proposed to be: Step 1:   Step 2:   Which of the following species is an intermediate?

Accepted Answer

A) IF1F1F1S1F1F1F10 
B) H2O2 
C) H2O 
D) OIF1F1F1S1F1F1F10 
E) This mechanism has no intermediates. 
A) IF1F1F1S1F1F1F10 
B) H2O2 
C) H2O 
D) OIF1F1F1S1F1F1F10 
E) This mechanism has no intermediates.

The reaction profiles for four reactions are shown below. Which one has the largest activation energy?

In a catalyzed reaction, the ________ of the transition state is lowered while the enthalpy change for the reaction remains the same, leading to a faster reaction.

Indicate which of the following compounds is not a component of photochemical smog.

In a catalyzed reaction, the activation energy of the ________ is lowered while the enthalpy change for the reaction remains the same, leading to a faster reaction.

The following graph shows the kinetics curves for the reaction of oxygen with hydrogen to form water: . Which curve is water?

Which of the following is not a possible graph of concentration versus time for a reactant?

Given the following data for the reaction A B, determine the activation energy, E_a, of the reaction. k (M/s) T (°C) 0)282 277 0)291 627

How many steps are involved in the following reaction?

For the reaction 2A 4B  3D, the rate of the reaction in terms of B would be written as ________.

For the reaction 2A  3B →4C  5D, the rate of the reaction in terms of D would be written as ________

Sodium hypochlorite (NaClO) is used as a common disinfectant. It decomposes in a first-order process with a rate constant of 0.10 s^¹. How long would it take for an initial concentration of 0.20 M to decrease to 0.07 M ?

The device in automobiles that has decreased NO and partially oxidized hydrocarbons from exhaust gases is termed a ________

Identify the order of each of the following reactions, based on the supplied graphs.

The mechanism for the reaction in the presence of I^(aq) is proposed to be: Step 1: Step 2: Which of the following species is an intermediate?

Matter and Energy: The Origin of the Universe

Atoms, Ions, and Molecules: Matter Starts Here

Stoichiometry: Mass, Formulas, and Reactions

Solution Chemistry: The Hydrosphere

Thermochemistry: Energy Changes in Reactions

Properties of Gases: The Air We Breathe

A Quantum Model of Atoms: Waves and Particles

Chemical Bonds: What Makes a Gas a Greenhouse Gas

Molecular Geometry: Shape Determines Function

Intermolecular Forces: The Uniqueness of Water

Solutions: Properties and Behavior

Solids: Crystals, Alloys, and Polymers

Chemical Equilibrium: How Much Product Does a Reaction Really Make

Acidbase Equilibria: Proton Transfer in Biological Systems

Additional Aqueous Equilibria: Chemistry and the Oceans

Thermodynamics: Spontaneous and Nonspontaneous Reactions and Processes

Electrochemistry: The Quest for Clean Energy

Nuclear Chemistry: Applications to Energy and Medicine

Organic and Biological Molecules: the Compounds of Life

The Main Group Elements: Life and the Periodic Table

Transition Metals: Biological and Medical Applications

Filters

Exam 13: Chemical Kinetics: Reactions in the Atmosphere

The reaction profiles for four reactions are shown below. Which one has the largest activation energy?

In a catalyzed reaction, the ________ of the transition state is lowered while the enthalpy change for the reaction remains the same, leading to a faster reaction.

Indicate which of the following compounds is not a component of photochemical smog.

In a catalyzed reaction, the activation energy of the ________ is lowered while the enthalpy change for the reaction remains the same, leading to a faster reaction.

The following graph shows the kinetics curves for the reaction of oxygen with hydrogen to form water: . Which curve is water?

Which of the following is not a possible graph of concentration versus time for a reactant?

Given the following data for the reaction A B, determine the activation energy, Ea, of the reaction. k (M/s) T (°C) 0)282 277 0)291 627

How many steps are involved in the following reaction?

For the reaction 2A 4B  3D, the rate of the reaction in terms of B would be written as ________.

For the reaction 2A  3B →4C  5D, the rate of the reaction in terms of D would be written as ________

Sodium hypochlorite (NaClO) is used as a common disinfectant. It decomposes in a first-order process with a rate constant of 0.10 s1. How long would it take for an initial concentration of 0.20 M to decrease to 0.07 M ?

The device in automobiles that has decreased NO and partially oxidized hydrocarbons from exhaust gases is termed a ________

Identify the order of each of the following reactions, based on the supplied graphs.

The mechanism for the reaction in the presence of I(aq) is proposed to be: Step 1: Step 2: Which of the following species is an intermediate?

Matter and Energy: The Origin of the Universe

Atoms, Ions, and Molecules: Matter Starts Here

Stoichiometry: Mass, Formulas, and Reactions

Solution Chemistry: The Hydrosphere

Thermochemistry: Energy Changes in Reactions

Properties of Gases: The Air We Breathe

A Quantum Model of Atoms: Waves and Particles

Chemical Bonds: What Makes a Gas a Greenhouse Gas

Molecular Geometry: Shape Determines Function

Intermolecular Forces: The Uniqueness of Water

Solutions: Properties and Behavior

Solids: Crystals, Alloys, and Polymers

Chemical Equilibrium: How Much Product Does a Reaction Really Make

Acidbase Equilibria: Proton Transfer in Biological Systems

Additional Aqueous Equilibria: Chemistry and the Oceans

Thermodynamics: Spontaneous and Nonspontaneous Reactions and Processes

Electrochemistry: The Quest for Clean Energy

Nuclear Chemistry: Applications to Energy and Medicine

Organic and Biological Molecules: the Compounds of Life

The Main Group Elements: Life and the Periodic Table

Transition Metals: Biological and Medical Applications

Filters

Given the following data for the reaction A B, determine the activation energy, E_a, of the reaction. k (M/s) T (°C) 0)282 277 0)291 627

Sodium hypochlorite (NaClO) is used as a common disinfectant. It decomposes in a first-order process with a rate constant of 0.10 s^¹. How long would it take for an initial concentration of 0.20 M to decrease to 0.07 M ?

The mechanism for the reaction in the presence of I^(aq) is proposed to be: Step 1: Step 2: Which of the following species is an intermediate?