Question 1

The overall order of a reaction is 2. The units of the rate constant for the reaction are ________.

Accepted Answer

A) M/s 
B) M-1s-1 
C) 1/s 
D) 1/M 
E) s/M2 
A) M/s 
B) M-1s-1 
C) 1/s 
D) 1/M 
E) s/M2

Question 2

Consider the following reaction: A → 2C
The average rate of appearance of C is given by Δ[C]/Δt. Comparing the rate of appearance of C and the rate of disappearance of A, we get Δ[C]/Δt = ________ × (-Δ[A]/Δt).

Accepted Answer

A) +2 
B) -1 
C) +1 
D) +1/2 
E) -1/2 
A) +2 
B) -1 
C) +1 
D) +1/2 
E) -1/2

Question 3

A compound decomposes by a first-order process. If 17.0% of the compound decomposes in 30 minutes, the half-life of the compound is ________.

Accepted Answer

A) 112 minutes 
B) 12 minutes 
C) 8 minutes 
D) 223 minutes 
E) 56 minutes 
A) 112 minutes 
B) 12 minutes 
C) 8 minutes 
D) 223 minutes 
E) 56 minutes

Question 4

At elevated temperatures, dinitrogen pentoxide decomposes to nitrogen dioxide and oxygen: 2N2O5(g) → 4NO2 (g) + O2 (g)
When the rate of formation of O2 is 2.2 × 10-4 M/s, the rate of decomposition of N2O5 is ________ M/s.

Accepted Answer

A) 7.2 × 10-3 
B) 3.6 × 10-3 
C) 1.8 × 10-3 
D) 1.4 × 10-2 
E) 0.00090 
A) 7.2 × 10-3 
B) 3.6 × 10-3 
C) 1.8 × 10-3 
D) 1.4 × 10-2 
E) 0.00090

Question 5

The data in the table below were obtained for the reaction:
A + B → P  
-The order of the reaction in B is ________.

Accepted Answer

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

Question 6

The uptake of molecules into the interior of another substance is referred to as ________.

Accepted Answer

The answer of The uptake of molecules into the interior...

Question 7

The reaction 2NOBr (g) → 2 NO (g)+ Br2 (g)
Is a second-order reaction with a rate constant of 0.80 M-1s-1 at 11 °C. If the initial concentration of NOBr is 0.0440 M, the concentration of NOBr after 6.0 seconds is ________.

Accepted Answer

A) 0.0276 M 
B) 0.0324 M 
C) 0.0363 M 
D) 0.0348 M 
E) 0.0402 M 
A) 0.0276 M 
B) 0.0324 M 
C) 0.0363 M 
D) 0.0348 M 
E) 0.0402 M

Question 8

A first-order reaction has a rate constant of 0.33 min-1. It takes ________ min for the reactant concentration to decrease from 0.13 M to 0.066 M.

Accepted Answer

A) 0.085 
B) 0.13 
C) 0.89 
D) 2.4 
E) 2.1 
A) 0.085 
B) 0.13 
C) 0.89 
D) 2.4 
E) 2.1

Question 9

The Earth's ozone layer is located in the ________.

Accepted Answer

The answer of The Earth's ozone layer is located in...

Question 10

The rate constant for a particular second-order reaction is 0.47 M-1s-1. If the initial concentration of reactant is 0.25 mol/L, it takes ________ s for the concentration to decrease to 0.20 mol/L.

Accepted Answer

A) 2.1 
B) 1.4 
C) 1.0 
D) 0.47 
E) 0.20 
A) 2.1 
B) 1.4 
C) 1.0 
D) 0.47 
E) 0.20

Question 11

The reaction A → B is first order in [A]. Consider the following data.  
-The rate constant for this reaction is ________ s-1.

Accepted Answer

A) 6.9 × 10-2 
B) 3.0 × 10-2 
C) 14 
D) 0.46 
E) 4.0 × 102 
A) 6.9 × 10-2 
B) 3.0 × 10-2 
C) 14 
D) 0.46 
E) 4.0 × 102

Question 12

Which one of the following graphs shows the correct relationship between concentration and time for a reaction that is second order in [A]?

Accepted Answer

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

Question 13

In general, as activation energy increases, reaction rate ________.

Accepted Answer

A) goes down if the reaction is exothermic 
B) goes down if the reaction is endothermic 
C) stays the same regardless of whether the reaction is exothermic or endothermic 
D) goes down regardless of whether the reaction is exothermic or endothermic 
E) none of the above 
A) goes down if the reaction is exothermic 
B) goes down if the reaction is endothermic 
C) stays the same regardless of whether the reaction is exothermic or endothermic 
D) goes down regardless of whether the reaction is exothermic or endothermic 
E) none of the above

Question 14

The following reaction is second order in [A] and the rate constant is 0.025 M-1s-1: A → B
The concentration of A was 0.65 M at 33 s. The initial concentration of A was ________ M.

Accepted Answer

A) 2.4 
B) 0.27 
C) 0.24 
D) 1.4 
E) 1.2 × 10-2 
A) 2.4 
B) 0.27 
C) 0.24 
D) 1.4 
E) 1.2 × 10-2

The overall order of a reaction is 2. The units of the rate constant for the reaction are ________.

Consider the following reaction: A → 2C The average rate of appearance of C is given by Δ[C]/Δt. Comparing the rate of appearance of C and the rate of disappearance of A, we get Δ[C]/Δt = ________ × (-Δ[A]/Δt).

A compound decomposes by a first-order process. If 17.0% of the compound decomposes in 30 minutes, the half-life of the compound is ________.

At elevated temperatures, dinitrogen pentoxide decomposes to nitrogen dioxide and oxygen: 2N₂O₅(g) → 4NO₂(g) + O₂ (g) When the rate of formation of O₂ is 2.2 × 10^-4 M/s, the rate of decomposition of N₂O₅ is ________ M/s.

The data in the table below were obtained for the reaction: A + B → P -The order of the reaction in B is ________.

The uptake of molecules into the interior of another substance is referred to as ________.

The reaction 2NOBr (g) → 2 NO (g)+ Br₂ (g) Is a second-order reaction with a rate constant of 0.80 M^-1s^-1at 11 °C. If the initial concentration of NOBr is 0.0440 M, the concentration of NOBr after 6.0 seconds is ________.

A first-order reaction has a rate constant of 0.33 min^-1. It takes ________ min for the reactant concentration to decrease from 0.13 M to 0.066 M.

The Earth's ozone layer is located in the ________.

The rate constant for a particular second-order reaction is 0.47 M^-1s^-1. If the initial concentration of reactant is 0.25 mol/L, it takes ________ s for the concentration to decrease to 0.20 mol/L.

The reaction A → B is first order in [A]. Consider the following data. -The rate constant for this reaction is ________ s^-1.

Which one of the following graphs shows the correct relationship between concentration and time for a reaction that is second order in [A]?

In general, as activation energy increases, reaction rate ________.

The following reaction is second order in [A] and the rate constant is 0.025 M^-1s^-1: A → B The concentration of A was 0.65 M at 33 s. The initial concentration of A was ________ M.

Introduction: Matter and Measurement

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Molecular Geometry and Bonding Theories

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Exam 14: Chemical Kinetics

The overall order of a reaction is 2. The units of the rate constant for the reaction are ________.

Consider the following reaction: A → 2C The average rate of appearance of C is given by Δ[C]/Δt. Comparing the rate of appearance of C and the rate of disappearance of A, we get Δ[C]/Δt = ________ × (-Δ[A]/Δt).

A compound decomposes by a first-order process. If 17.0% of the compound decomposes in 30 minutes, the half-life of the compound is ________.

At elevated temperatures, dinitrogen pentoxide decomposes to nitrogen dioxide and oxygen: 2N2O5(g) → 4NO2 (g) + O2 (g) When the rate of formation of O2 is 2.2 × 10-4 M/s, the rate of decomposition of N2O5 is ________ M/s.

The data in the table below were obtained for the reaction: A + B → P -The order of the reaction in B is ________.

The uptake of molecules into the interior of another substance is referred to as ________.

The reaction 2NOBr (g) → 2 NO (g)+ Br2 (g) Is a second-order reaction with a rate constant of 0.80 M-1s-1 at 11 °C. If the initial concentration of NOBr is 0.0440 M, the concentration of NOBr after 6.0 seconds is ________.

A first-order reaction has a rate constant of 0.33 min-1. It takes ________ min for the reactant concentration to decrease from 0.13 M to 0.066 M.

The Earth's ozone layer is located in the ________.

The rate constant for a particular second-order reaction is 0.47 M-1s-1. If the initial concentration of reactant is 0.25 mol/L, it takes ________ s for the concentration to decrease to 0.20 mol/L.

The reaction A → B is first order in [A]. Consider the following data. -The rate constant for this reaction is ________ s-1.

Which one of the following graphs shows the correct relationship between concentration and time for a reaction that is second order in [A]?

In general, as activation energy increases, reaction rate ________.

The following reaction is second order in [A] and the rate constant is 0.025 M-1s-1: A → B The concentration of A was 0.65 M at 33 s. The initial concentration of A was ________ M.

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

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At elevated temperatures, dinitrogen pentoxide decomposes to nitrogen dioxide and oxygen: 2N₂O₅(g) → 4NO₂(g) + O₂ (g) When the rate of formation of O₂ is 2.2 × 10^-4 M/s, the rate of decomposition of N₂O₅ is ________ M/s.

The reaction 2NOBr (g) → 2 NO (g)+ Br₂ (g) Is a second-order reaction with a rate constant of 0.80 M^-1s^-1at 11 °C. If the initial concentration of NOBr is 0.0440 M, the concentration of NOBr after 6.0 seconds is ________.

A first-order reaction has a rate constant of 0.33 min^-1. It takes ________ min for the reactant concentration to decrease from 0.13 M to 0.066 M.

The rate constant for a particular second-order reaction is 0.47 M^-1s^-1. If the initial concentration of reactant is 0.25 mol/L, it takes ________ s for the concentration to decrease to 0.20 mol/L.

The reaction A → B is first order in [A]. Consider the following data. -The rate constant for this reaction is ________ s^-1.

The following reaction is second order in [A] and the rate constant is 0.025 M^-1s^-1: A → B The concentration of A was 0.65 M at 33 s. The initial concentration of A was ________ M.