Question 1

The reaction A → B is first order in [A]. Consider the following data. 
-The concentration of A is ________ M after 40.0 s.

Accepted Answer

The concentration of A is 1.3 × 10^-2 M after 40.0 s because the rate law for the reaction is:Rate = k[A]^2and the integrated rate law is:1/[A] - 1/[A]0 = ktwhere [A]0 is the initial concentration of A, k is the rate constant, and t is time.Substituting the given values into the integrated rate law, we get:1/[A] - 1/0.200 M = (2.50 × 10^-3 s^-1)(40.0 s)Solving for [A], we get:[A] = 1.3 × 10^-2 M

Question 2

The data in the table below were obtained for the reaction:
A + B → P 
-The rate law for this reaction is rate = ________.

Accepted Answer

E

Question 3

Which one of the following is not a valid expression for the rate of the reaction below? 4NH₃ + 7O₂ → 4NO₂ + 6H₂O

Accepted Answer

E

Question 4

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

Accepted Answer

Oxygen is a reactant in combustion and concentration of oxygen is higher in pure oxygen than it is in air, which leads to more vigorous combustion.

Question 5

The reaction A (aq) → B (aq)is first order in [A]. A solution is prepared with [A] = 1.22 M. The following data are obtained as the reaction proceeds: The rate constant for this reaction is ________ s^-1.

Accepted Answer

The answer of The reaction A (aq) → B (aq)is...

Question 6

The data in the table below were obtained for the reaction: 2 ClOS1U1B12S1U1B0 (aq) + 2 OHS1U1P1-S1S1P0 (aq) → ClOS1U1B13S1U1B0S1U1P1-S1S1P0 (aq) + ClOS1U1B12S1U1B0S1U1P1-S1S1P0 (aq) + HS1U1B12S1U1B0O (1) -What is the order of the reaction with respect to OH^-?

Accepted Answer

The order of the reaction with respect to a particular reactant is determined by the effect of changing the concentration of that reactant on the reaction rate. In this case, if the concentration of OH^- is doubled, the reaction rate will also double (based on the stoichiometry of the reaction). This indicates that the reaction is first order with respect to OH^-.

Question 7

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

Accepted Answer

The rate constant is the slope of the line in the graph of concentration vs. time. The slope is 6.9 × 10^-2 s^-1.

Question 8

The reaction A → B is first order in [A]. Consider the following data. -The rate constant of a first-order process that has a half-life of 3.50 min is ________ s^-1.

Accepted Answer

The answer of The reaction A → B is first...

Question 9

The rate law of a reaction is rate = k[D][X]. The units of the rate constant are ________.

Accepted Answer

The answer of The rate law of a reaction is...

Question 10

The reaction 2NO₂ → 2NO + O₂ Follows second-order kinetics. At 300 °C, [NO₂] drops from 0.0100 M to 0.00650 M in 100.0 s. The rate constant for the reaction is ________ M^-1s^-1.

Accepted Answer

The answer of The reaction 2NO₂ → 2NO + O₂ Follows...

Question 11

One difference between first- and second-order reactions is that ________.

Accepted Answer

The half-life of a first-order reaction is independent of the initial concentration of the reactant, while the half-life of a second-order reaction is inversely proportional to the initial concentration of the reactant. Therefore, the half-life of a first-order reaction does not depend on [A]₀, but the half-life of a second-order reaction does depend on [A]₀.

Question 12

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

Accepted Answer

The answer of The reaction CH₃-N≡C → CH₃-C≡N Is a first-order...

Question 13

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

For a second-order reaction, the concentration of A is inversely proportional to time squared. This means that as the concentration of A decreases with time, the rate of the reaction also decreases, but at a faster rate than in a first-order reaction. Graph C shows a straight line with a negative slope, which represents the inverse relationship between [A] and t. The other graphs do not show this type of relationship.

Question 14

Of the following, all are valid units for a reaction rate except ________.

Accepted Answer

The answer of Of the following, all are valid units...

Question 15

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

The answer of The following reaction is second order in...

Question 16

The data in the table below were obtained for the reaction: 2 ClOS1U1B12S1U1B0 (aq) + 2 OHS1U1P1-S1S1P0 (aq) → ClOS1U1B13S1U1B0S1U1P1-S1S1P0 (aq) + ClOS1U1B12S1U1B0S1U1P1-S1S1P0 (aq) + HS1U1B12S1U1B0O (1) -What is the order of the reaction with respect to ClO₂?

Accepted Answer

The order of the reaction with respect to ClO₂ is determined by comparing the initial rate of the reaction when the concentration of ClO₂ is doubled (keeping all other concentrations constant) to the initial rate when the concentration of ClO₂ is kept constant. In this case, doubling the concentration of ClO₂ leads to a four-fold increase in the initial rate, indicating that the reaction is second order with respect to ClO₂.

Question 17

The data in the table below were obtained for the reaction:
2 ClOS1U1B12S1U1B0 (aq) + 2 OHS1U1P1-S1S1P0 (aq) → ClOS1U1B13S1U1B0S1U1P1-S1S1P0 (aq) + ClOS1U1B12S1U1B0S1U1P1-S1S1P0 (aq) + HS1U1B12S1U1B0O (1) 
-What is the overall order of the reaction?

Accepted Answer

The overall order of a reaction is determined by adding the exponents of the concentration terms in the rate equation. In this case, the overall order is 3.

Question 18

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

Accepted Answer

The answer of The data in the table below were...

Question 19

The data in the table below were obtained for the reaction:
2 ClOS1U1B12S1U1B0 (aq) + 2 OHS1U1P1-S1S1P0 (aq) → ClOS1U1B13S1U1B0S1U1P1-S1S1P0 (aq) + ClOS1U1B12S1U1B0S1U1P1-S1S1P0 (aq) + HS1U1B12S1U1B0O (1) 
-What is the magnitude of the rate constant for the reaction?

Accepted Answer

The answer of The data in the table below were...

Question 20

Under constant conditions, the half-life of a first-order reaction ________.

Accepted Answer

All of the above statements are correct. The half-life of a first-order reaction is the time required for the concentration of the reactant to reach half of its initial value. This value is constant and can be calculated from the reaction rate constant. The half-life of a first-order reaction does not depend on the initial reactant concentration, only on the reaction rate constant. Therefore, all of the statements are correct.

Quiz 14: Chemical Kinetics

The reaction A → B is first order in [A]. Consider the following data. -The concentration of A is ________ M after 40.0 s.

The data in the table below were obtained for the reaction: A + B → P -The rate law for this reaction is rate = ________.

Which one of the following is not a valid expression for the rate of the reaction below? 4NH₃ + 7O₂ → 4NO₂ + 6H₂O

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

The reaction A (aq) → B (aq) is first order in [A]. A solution is prepared with [A] = 1.22 M. The following data are obtained as the reaction proceeds: The rate constant for this reaction is ________ s^-1.

The data in the table below were obtained for the reaction: 2 ClO₂ (aq) + 2 OH^- (aq) → ClO₃^- (aq) + ClO₂^- (aq) + H₂O (1) -What is the order of the reaction with respect to OH^-?

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

The reaction A → B is first order in [A]. Consider the following data. -The rate constant of a first-order process that has a half-life of 3.50 min is ________ s^-1.

The rate law of a reaction is rate = k[D][X]. The units of the rate constant are ________.

The reaction 2NO₂ → 2NO + O₂ Follows second-order kinetics. At 300 °C, [NO₂] drops from 0.0100 M to 0.00650 M in 100.0 s. The rate constant for the reaction is ________ M^-1s^-1.

One difference between first- and second-order reactions is that ________.

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

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

Of the following, all are valid units for a reaction rate except ________.

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.

The data in the table below were obtained for the reaction: 2 ClO₂ (aq) + 2 OH^- (aq) → ClO₃^- (aq) + ClO₂^- (aq) + H₂O (1) -What is the order of the reaction with respect to ClO₂?

The data in the table below were obtained for the reaction: 2 ClO₂ (aq) + 2 OH^- (aq) → ClO₃^- (aq) + ClO₂^- (aq) + H₂O (1) -What is the overall order of the reaction?

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

The data in the table below were obtained for the reaction: 2 ClO₂ (aq) + 2 OH^- (aq) → ClO₃^- (aq) + ClO₂^- (aq) + H₂O (1) -What is the magnitude of the rate constant for the reaction?

Under constant conditions, the half-life of a first-order reaction ________.

Quiz 14: Chemical Kinetics

The reaction A → B is first order in [A]. Consider the following data. -The concentration of A is ________ M after 40.0 s.

The data in the table below were obtained for the reaction: A + B → P -The rate law for this reaction is rate = ________.

Which one of the following is not a valid expression for the rate of the reaction below? 4NH3 + 7O2 → 4NO2 + 6H2O

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

The reaction A (aq) → B (aq) is first order in [A]. A solution is prepared with [A] = 1.22 M. The following data are obtained as the reaction proceeds: The rate constant for this reaction is ________ s-1.

The data in the table below were obtained for the reaction: 2 ClO2 (aq) + 2 OH- (aq) → ClO3- (aq) + ClO2- (aq) + H2O (1) -What is the order of the reaction with respect to OH-?

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

The reaction A → B is first order in [A]. Consider the following data. -The rate constant of a first-order process that has a half-life of 3.50 min is ________ s-1.

The rate law of a reaction is rate = k[D][X]. The units of the rate constant are ________.

The reaction 2NO2 → 2NO + O2 Follows second-order kinetics. At 300 °C, [NO2] drops from 0.0100 M to 0.00650 M in 100.0 s. The rate constant for the reaction is ________ M-1s-1.

One difference between first- and second-order reactions is that ________.

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

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

Of the following, all are valid units for a reaction rate except ________.

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.

The data in the table below were obtained for the reaction: 2 ClO2 (aq) + 2 OH- (aq) → ClO3- (aq) + ClO2- (aq) + H2O (1) -What is the order of the reaction with respect to ClO2?

The data in the table below were obtained for the reaction: 2 ClO2 (aq) + 2 OH- (aq) → ClO3- (aq) + ClO2- (aq) + H2O (1) -What is the overall order of the reaction?

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

The data in the table below were obtained for the reaction: 2 ClO2 (aq) + 2 OH- (aq) → ClO3- (aq) + ClO2- (aq) + H2O (1) -What is the magnitude of the rate constant for the reaction?

Under constant conditions, the half-life of a first-order reaction ________.

Which one of the following is not a valid expression for the rate of the reaction below? 4NH₃ + 7O₂ → 4NO₂ + 6H₂O

The reaction A (aq) → B (aq) is first order in [A]. A solution is prepared with [A] = 1.22 M. The following data are obtained as the reaction proceeds: The rate constant for this reaction is ________ s^-1.

The data in the table below were obtained for the reaction: 2 ClO₂ (aq) + 2 OH^- (aq) → ClO₃^- (aq) + ClO₂^- (aq) + H₂O (1) -What is the order of the reaction with respect to OH^-?

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

The reaction A → B is first order in [A]. Consider the following data. -The rate constant of a first-order process that has a half-life of 3.50 min is ________ s^-1.

The reaction 2NO₂ → 2NO + O₂ Follows second-order kinetics. At 300 °C, [NO₂] drops from 0.0100 M to 0.00650 M in 100.0 s. The rate constant for the reaction is ________ M^-1s^-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 is 1.00 × 10^-3 initially, is ________ after 1.000 × 10³ s.

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.

The data in the table below were obtained for the reaction: 2 ClO₂ (aq) + 2 OH^- (aq) → ClO₃^- (aq) + ClO₂^- (aq) + H₂O (1) -What is the order of the reaction with respect to ClO₂?

The data in the table below were obtained for the reaction: 2 ClO₂ (aq) + 2 OH^- (aq) → ClO₃^- (aq) + ClO₂^- (aq) + H₂O (1) -What is the overall order of the reaction?

The data in the table below were obtained for the reaction: 2 ClO₂ (aq) + 2 OH^- (aq) → ClO₃^- (aq) + ClO₂^- (aq) + H₂O (1) -What is the magnitude of the rate constant for the reaction?