Question 1

The concentration of S2O82- remaining at 400 s is __________ M.

Accepted Answer

A) +0.015 
B) +0.035 
C) -0.007 
D) +0.045 
E) +0.057 
A) +0.015 
B) +0.035 
C) -0.007 
D) +0.045 
E) +0.057

Question 2

Reaction rates are affected by reactant concentrations and temperature. This is accounted for by the __________.

Accepted Answer

The answer of Reaction rates are affected by reactant concentrations...

Question 3

The half-life of a first-order reaction is 13 min. If the initial concentration of reactant is 0.13 M, it takes __________ min for it to decrease to 0.085 M.

Accepted Answer

A) 12 
B) 10 
C) 8.0 
D) 11 
E) 7.0 
A) 12 
B) 10 
C) 8.0 
D) 11 
E) 7.0

Question 4

The average rate of disappearance of A between 20 s and 40 s is __________ mol/s.

Accepted Answer

A) 8.5 × 10-4 
B) 1.7 × 10-3 
C) 590 
D) 7.1 × 10-3 
E) 1.4 × 10-3 
A) 8.5 × 10-4 
B) 1.7 × 10-3 
C) 590 
D) 7.1 × 10-3 
E) 1.4 × 10-3

Question 5

The decomposition of N2O5 in solution in carbon tetrachloride proceeds via the reaction 2N2O5 (soln)→ 4NO2 (soln)+ O2 (soln)
The reaction is first order and has a rate constant of 4.82 × 10-3 s-1 at 64°C. The rate law for the reaction is rate = __________.

Accepted Answer

A) k[N2O5]2 
B)    
C) k[N2O5] 
D)    
E) 2k[N2O5] 
A) k[N2O5]2 
B)    
C) k[N2O5] 
D)    
E) 2k[N2O5]

Question 6

The following reaction is second order in [A] and the rate constant is 0.039 M-1s-1: A → B
The concentration of A was 0.30 M at 23 s. The initial concentration of A was __________ M.

Accepted Answer

A) 2.4 
B) 0.27 
C) 0.41 
D) 3.7 
E) 1.2 × 10-2 
A) 2.4 
B) 0.27 
C) 0.41 
D) 3.7 
E) 1.2 × 10-2

Question 7

The magnitude of the rate constant is __________.

Accepted Answer

A) 38.0 
B) 0.278 
C) 13.2 
D) 42.0 
E) 2.21 
A) 38.0 
B) 0.278 
C) 13.2 
D) 42.0 
E) 2.21

Question 8

Which energy difference in the energy profile below corresponds to the activation energy for the forward reaction?

Accepted Answer

A) x 
B) y 
C) x + y 
D) x - y 
E) y - x 
A) x 
B) y 
C) x + y 
D) x - y 
E) y - x

Question 9

The average rate of disappearance of I- in the initial 400.0 s is __________ M/s.

Accepted Answer

A) 6.00 
B) 3.8 × 10-5 
C) 1.4 × 10-4 
D) 2.7 × 104 
E) 3.2 × 10-4 
A) 6.00 
B) 3.8 × 10-5 
C) 1.4 × 10-4 
D) 2.7 × 104 
E) 3.2 × 10-4

Question 10

The combustion of ethylene proceeds by the reaction C2H4 (g)+ 3O2 (g)→ 2CO2 (g)+ 2H2O (g)
When the rate of disappearance of O2 is 0.23 Ms-1, the rate of disappearance of C2H4 is __________ Ms-1.

Accepted Answer

A) 0.15 
B) 0.077 
C) 0.69 
D) 0.35 
E) 0.46 
A) 0.15 
B) 0.077 
C) 0.69 
D) 0.35 
E) 0.46

The concentration of S₂O₈^2- remaining at 400 s is __________ M.

Reaction rates are affected by reactant concentrations and temperature. This is accounted for by the __________.

The half-life of a first-order reaction is 13 min. If the initial concentration of reactant is 0.13 M, it takes __________ min for it to decrease to 0.085 M.

The average rate of disappearance of A between 20 s and 40 s is __________ mol/s.

The decomposition of N₂O₅ in solution in carbon tetrachloride proceeds via the reaction 2N₂O₅(soln)→ 4NO₂(soln)+ O₂(soln) The reaction is first order and has a rate constant of 4.82 × 10^-3 s^-1 at 64°C. The rate law for the reaction is rate = __________.

The following reaction is second order in [A] and the rate constant is 0.039 M^-1s^-1: A → B The concentration of A was 0.30 M at 23 s. The initial concentration of A was __________ M.

The magnitude of the rate constant is __________.

Which energy difference in the energy profile below corresponds to the activation energy for the forward reaction?

The average rate of disappearance of I^- in the initial 400.0 s is __________ M/s.

The combustion of ethylene proceeds by the reaction C₂H₄ (g)+ 3O₂ (g)→ 2CO₂ (g)+ 2H₂O (g) When the rate of disappearance of O₂ is 0.23 Ms^-1, the rate of disappearance of C₂H₄ is __________ Ms^-1.

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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Exam 14: Chemical Kinetics

The concentration of S2O82- remaining at 400 s is __________ M.

Reaction rates are affected by reactant concentrations and temperature. This is accounted for by the __________.

The half-life of a first-order reaction is 13 min. If the initial concentration of reactant is 0.13 M, it takes __________ min for it to decrease to 0.085 M.

The average rate of disappearance of A between 20 s and 40 s is __________ mol/s.

The decomposition of N2O5 in solution in carbon tetrachloride proceeds via the reaction 2N2O5 (soln)→ 4NO2 (soln)+ O2 (soln) The reaction is first order and has a rate constant of 4.82 × 10-3 s-1 at 64°C. The rate law for the reaction is rate = __________.

The following reaction is second order in [A] and the rate constant is 0.039 M-1s-1: A → B The concentration of A was 0.30 M at 23 s. The initial concentration of A was __________ M.

The magnitude of the rate constant is __________.

Which energy difference in the energy profile below corresponds to the activation energy for the forward reaction?

The average rate of disappearance of I- in the initial 400.0 s is __________ M/s.

The combustion of ethylene proceeds by the reaction C2H4 (g)+ 3O2 (g)→ 2CO2 (g)+ 2H2O (g) When the rate of disappearance of O2 is 0.23 Ms-1, the rate of disappearance of C2H4 is __________ Ms-1.

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

Filters

The concentration of S₂O₈^2- remaining at 400 s is __________ M.

The decomposition of N₂O₅ in solution in carbon tetrachloride proceeds via the reaction 2N₂O₅(soln)→ 4NO₂(soln)+ O₂(soln) The reaction is first order and has a rate constant of 4.82 × 10^-3 s^-1 at 64°C. The rate law for the reaction is rate = __________.

The following reaction is second order in [A] and the rate constant is 0.039 M^-1s^-1: A → B The concentration of A was 0.30 M at 23 s. The initial concentration of A was __________ M.

The average rate of disappearance of I^- in the initial 400.0 s is __________ M/s.

The combustion of ethylene proceeds by the reaction C₂H₄ (g)+ 3O₂ (g)→ 2CO₂ (g)+ 2H₂O (g) When the rate of disappearance of O₂ is 0.23 Ms^-1, the rate of disappearance of C₂H₄ is __________ Ms^-1.