Question 1

Based on the experimental data provided, what is the rate law for the reaction A + B → products?

Accepted Answer

$$	ext{rate} = k[A]^2$$

Question 2

Which graph best represents the concentration of a reactant in a first-order reaction as a function of time?

Accepted Answer

Image 1: $$\ln[A] vs. $$time (straight line decreasing)

Question 3

Which graph would you expect for a second-order reaction with respect to [A]?

Accepted Answer

Image 3: $$1/[A] vs. $$time (straight line increasing)

Question 4

Which of the following is the correct equilibrium constant expression for the reaction: $$\mathrm{N_2O_4(g) \rightleftharpoons 2NO_2(g)}$$?

Accepted Answer

Image 6: $$\frac{[NO_2$]^2}{[N_2O_4]}$$

Question 5

If a plot of $$\ln[A]$$ versus time is linear, what is the order of the reaction with respect to A?

Accepted Answer

First order

Question 6

Given the data in the table, what is the order of the reaction with respect to [B]?

Accepted Answer

Zero order

Question 7

Which of the following graphs would indicate a zero-order reaction with respect to [A]?

Accepted Answer

Image 2: $$[A] vs. $$time (straight line decreasing)

Question 8

If the initial rate increases by a factor of 9 when [A] is tripled, what is the order of the reaction with respect to [A]?

Accepted Answer

Second order

Question 9

For the reaction $$\mathrm{N_2O_4(g) \rightleftharpoons 2NO_2(g)}$$, which of the following expressions is incorrect for the equilibrium constant?

Accepted Answer

$$K = \frac{[NO_2$]}{[N_2O_4]}$$

Question 10

Which of the following best describes the relationship between the rate law and the data in the table provided?

Accepted Answer

The rate is second order in [A] and zero order in [B]

General Chemistry Exam 1 Review – Kinetics and Equilibrium Guidance

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