Nitrogen dioxide decomposes to nitric oxide and oxygen via the reaction: 2NO2 → 2NO + O2 In a particular experiment at 300 °C, [NO2] drops from 0.0100 to 0.00550 M in 100 s. The rate of appearance of O2 for this period is __________ M/s.

A) 2.3 × 10-5 B) 4.5 × 10-5 C) 9.0 × 10-5 D) 4.5 × 10-3 E) 9.0 × 10-3 A) 2.3 × 10-5 B) 4.5 × 10-5 C) 9.0 × 10-5 D) 4.5 × 10-3 E) 9.0 × 10-3

The combustion of ethylene proceeds by the reaction C2H4(g)+ 3O2 (g)→ 2CO2 (g)+ 2H2O (g) When the rate of disappearance of O2 is 0.28 Ms-1, the rate of appearance of CO2 is __________ Ms-1.

A) 0.19 B) 0.093 C) 0.84 D) 0.42 E) 0.56 A) 0.19 B) 0.093 C) 0.84 D) 0.42 E) 0.56

The isomerization of methylisonitrile to acetonitrile CH3NC (g)→ CH3CN (g) Is first order in CH3NC. The half life of the reaction is 5.20 × 101 s at 545 K. The rate constant when the initial [CH3NC] is 0.030 M is __________ s-1.

A) 75.1 B) 0.641 C) 0.0133 D) 1.56 E) 2.84 × 104 A) 75.1 B) 0.641 C) 0.0133 D) 1.56 E) 2.84 × 104

SO2Cl2 decomposes in the gas phase by the reaction SO2Cl2 (g)→ SO2 (g)+ Cl2 (g) The reaction is first order in SO2Cl2 and the rate constant is 3.0 × 10-6s-1 at 600 K. A vessel is charged with 2.4 atm of SO2Cl2 at 600 K. The partial pressure of SO2Cl2 at 3.0 × 105 s is __________ atm.

A) 0.76 B) 2.2 C) 0.98 D) 0.29 E) 1.4 × 105 A) 0.76 B) 2.2 C) 0.98 D) 0.29 E) 1.4 × 105

The rate law for a reaction is rate = k [A][B]2 Which one of the following statements is false?

A) The reaction is first order in A. B) The reaction is second order in B. C) The reaction is second order overall. D) k is the reaction rate constant E) If [B] is doubled, the reaction rate will increase by a factor of 4. A) The reaction is first order in A. B) The reaction is second order in B. C) The reaction is second order overall. D) k is the reaction rate constant E) If [B] is doubled, the reaction rate will increase by a factor of 4.

The reaction CH3-N≡C → CH3-C≡N Is a first-order reaction. At 230.3 °C, k = 6.29 × 10-4s-1. If [CH3-NC] is 1.00 × 10-3 initially, [CH3-NC] is __________ after 1.000 × 103 s.

A) 5.33 × 10-4 B) 2.34 × 10-4 C) 1.88 × 10-3 D) 4.27 × 10-3 E) 1.00 × 10-6 A) 5.33 × 10-4 B) 2.34 × 10-4 C) 1.88 × 10-3 D) 4.27 × 10-3 E) 1.00 × 10-6

Exam 14: Chemical Kinetics

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^-3s^-1 at 64°C. If the reaction is initiated with 0.058 mol in a 1.00-L vessel, how many moles remain after 151 s?

(Multiple Choice)

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Question 81

Nitrogen dioxide decomposes to nitric oxide and oxygen via the reaction: 2NO₂ → 2NO + O₂ In a particular experiment at 300 °C, [NO₂] drops from 0.0100 to 0.00550 M in 100 s. The rate of appearance of O₂ for this period is __________ M/s.

(Multiple Choice)

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Question 82

For a first-order reaction, a plot of versus is linear.

(Multiple Choice)

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Question 83

A burning splint will burn more vigorously in pure oxygen than in air because

(Multiple Choice)

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Question 84

The combustion of ethylene proceeds by the reaction C₂H₄(g)+ 3O₂ (g)→ 2CO₂ (g)+ 2H₂O (g) When the rate of disappearance of O₂ is 0.28 Ms^-1, the rate of appearance of CO₂ is __________ Ms^-1.

(Multiple Choice)

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Question 85

What is the order of the reaction with respect to ClO₂?

(Multiple Choice)

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Question 86

The active site of nitrogenase is a cofactor that contains two transition metals. These transition metals are __________.

(Multiple Choice)

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Question 87

The kinetics of the reaction below were studied and it was determined that the reaction rate did not change when the concentration of B was tripled. The reaction is __________ order in B. A + B → P

(Multiple Choice)

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Question 88

The isomerization of methylisonitrile to acetonitrile CH₃NC (g)→ CH₃CN (g) Is first order in CH₃NC. The half life of the reaction is 5.20 × 10¹ s at 545 K. The rate constant when the initial [CH₃NC] is 0.030 M is __________ s^-1.

(Multiple Choice)

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Question 89

SO₂Cl₂decomposes in the gas phase by the reaction SO₂Cl₂ (g)→ SO₂ (g)+ Cl₂ (g) The reaction is first order in SO₂Cl₂ and the rate constant is 3.0 × 10^-6s^-1 at 600 K. A vessel is charged with 2.4 atm of SO₂Cl₂ at 600 K. The partial pressure of SO₂Cl₂ at 3.0 × 10⁵ s is __________ atm.

(Multiple Choice)

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Question 90

The rate law for a reaction is rate = k [A][B]² Which one of the following statements is false?

(Multiple Choice)

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Question 91

As the temperature of a reaction is increased, the rate of the reaction increases because the __________.

(Multiple Choice)

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Question 92

A reaction was found to be second order in carbon monoxide concentration. The rate of the reaction __________ if the [CO] is doubled, with everything else kept the same.

(Multiple Choice)

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Question 93

The average rate of appearance of B between 20 s and 30 s is __________ mol/s.

(Multiple Choice)

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Question 94

Reaction rate data showing temperature dependence obey an equation devised by __________.

(Short Answer)

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Question 95

The rate constant of a first-order process that has a half-life of 225 s is __________ s^-1.

(Multiple Choice)

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Question 96

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

(Multiple Choice)

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Question 97

The reaction CH₃-N≡C → CH₃-C≡N Is a first-order reaction. At 230.3 °C, k = 6.29 × 10^-⁴s^-1. If [CH₃-NC] is 1.00 × 10^-³ initially, [CH₃-NC] is __________ after 1.000 × 10³ s.

(Multiple Choice)

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Question 98

What is the order of the reaction with respect to OH^-?

(Multiple Choice)

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Question 99

A reaction was found to be zero order in A. Increasing the concentration of A by a factor of 3 will cause the reaction rate to __________.

(Multiple Choice)

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Question 100

Showing 81 - 100 of 130

Exam 14: Chemical Kinetics

Nitrogen dioxide decomposes to nitric oxide and oxygen via the reaction: 2NO2 → 2NO + O2 In a particular experiment at 300 °C, [NO2] drops from 0.0100 to 0.00550 M in 100 s. The rate of appearance of O2 for this period is __________ M/s.

For a first-order reaction, a plot of __________ versus __________ is linear.

A burning splint will burn more vigorously in pure oxygen than in air because

The combustion of ethylene proceeds by the reaction C2H4(g)+ 3O2 (g)→ 2CO2 (g)+ 2H2O (g) When the rate of disappearance of O2 is 0.28 Ms-1, the rate of appearance of CO2 is __________ Ms-1.

What is the order of the reaction with respect to ClO2?

The active site of nitrogenase is a cofactor that contains two transition metals. These transition metals are __________.

The kinetics of the reaction below were studied and it was determined that the reaction rate did not change when the concentration of B was tripled. The reaction is __________ order in B. A + B → P

The isomerization of methylisonitrile to acetonitrile CH3NC (g)→ CH3CN (g) Is first order in CH3NC. The half life of the reaction is 5.20 × 101 s at 545 K. The rate constant when the initial [CH3NC] is 0.030 M is __________ s-1.

SO2Cl2 decomposes in the gas phase by the reaction SO2Cl2 (g)→ SO2 (g)+ Cl2 (g) The reaction is first order in SO2Cl2 and the rate constant is 3.0 × 10-6s-1 at 600 K. A vessel is charged with 2.4 atm of SO2Cl2 at 600 K. The partial pressure of SO2Cl2 at 3.0 × 105 s is __________ atm.

The rate law for a reaction is rate = k [A][B]2 Which one of the following statements is false?

As the temperature of a reaction is increased, the rate of the reaction increases because the __________.

A reaction was found to be second order in carbon monoxide concentration. The rate of the reaction __________ if the [CO] is doubled, with everything else kept the same.

The average rate of appearance of B between 20 s and 30 s is __________ mol/s.

Reaction rate data showing temperature dependence obey an equation devised by __________.

The rate constant of a first-order process that has a half-life of 225 s 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]?

The reaction CH3-N≡C → CH3-C≡N Is a first-order reaction. At 230.3 °C, k = 6.29 × 10-4s-1. If [CH3-NC] is 1.00 × 10-3 initially, [CH3-NC] is __________ after 1.000 × 103 s.

What is the order of the reaction with respect to OH-?

A reaction was found to be zero order in A. Increasing the concentration of A by a factor of 3 will cause the reaction rate to __________.

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Nitrogen dioxide decomposes to nitric oxide and oxygen via the reaction: 2NO₂ → 2NO + O₂ In a particular experiment at 300 °C, [NO₂] drops from 0.0100 to 0.00550 M in 100 s. The rate of appearance of O₂ for this period is __________ M/s.

For a first-order reaction, a plot of versus is linear.

The combustion of ethylene proceeds by the reaction C₂H₄(g)+ 3O₂ (g)→ 2CO₂ (g)+ 2H₂O (g) When the rate of disappearance of O₂ is 0.28 Ms^-1, the rate of appearance of CO₂ is __________ Ms^-1.

What is the order of the reaction with respect to ClO₂?

The isomerization of methylisonitrile to acetonitrile CH₃NC (g)→ CH₃CN (g) Is first order in CH₃NC. The half life of the reaction is 5.20 × 10¹ s at 545 K. The rate constant when the initial [CH₃NC] is 0.030 M is __________ s^-1.

The rate law for a reaction is rate = k [A][B]² Which one of the following statements is false?

The rate constant of a first-order process that has a half-life of 225 s is __________ s^-1.

The reaction CH₃-N≡C → CH₃-C≡N Is a first-order reaction. At 230.3 °C, k = 6.29 × 10^-⁴s^-1. If [CH₃-NC] is 1.00 × 10^-³ initially, [CH₃-NC] is __________ after 1.000 × 10³ s.

What is the order of the reaction with respect to OH^-?