AP Kinetics Review Game

Which of the following will most likely increase the rate of the reaction represented above?

• Decreasing the temperature of the reaction system

• Adding a heterogeneous catalyst to the reaction system

• Increasing the volume of the reaction vessel using a piston

• Removing some H₂ (g) from the reaction system

Tags

NGSS.HS-PS1-5

• I only

• II only

• I and II only

• I, II, and III

Tags

NGSS.HS-PS1-4

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NGSS.HS-PS1-5

Two solid reactions of varying particle size are combined in a vessel. Assuming that the same mass of each reactant is used in each case, which of the following represents the conditions that will result in the fastest reaction rate?

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Tags

NGSS.HS-PS1-5

After a certain pesticide compound is applied to crops, its decomposition is a first-order reaction with a half-life of 32.5 days. What is the rate constant, k, for the decomposition reaction?

• 0.0213 day^-1

• 0.0308 day^-1

• 32.5 day^-1

• 46.9 day^-1

Tags

NGSS.HS-PS1-5

What effect will increasing [H⁺] at constant temperature have on the reaction represented?

• The activation energy of the reaction will increase.

• The activation energy of the reaction will decrease.

• The frequency of collisions between H⁺ and ClO^- will increase.

• The value of the rate constant will increase.

Tags

NGSS.HS-PS1-5

Which of the following best helps explain why an increase in temperature increases the rate of a chemical reaction?

• At higher temperatures, reactions have a lower activation energy.

• At higher temperatures, reactions have a higher activation energy.

• At higher temperatures, every collision results in the formation of a product.

• At higher temperatures, high-energy collisions happen more frequently.

Tags

NGSS.HS-PS1-5

The isomerization of cyclopropane to propylene is a first-order process with a half-life of 19 minutes at 500 C. The time it takes for the partial pressure of cyclopropane to decrease from 1.0 atm to 0.125 atm at 500 C is closest to

• 38 min

• 57 min

• 76 min

• 152 min

Tags

NGSS.HS-PS1-5

• The reactant must be first order because there is only reactant species.

• The reaction is first order if the plot of ln [H₂O₂] versus time is a straight line

• The reaction is first order if the plot of 1/[H₂O₂] versus time is a straight line

• The reaction is second order because 2 is coefficient of H₂O₂ in the chemical equation.

The particle models shown represent a proposed two-step mechanism for the destruction of ozone (O₃) in the upper atmosphere.

Based on the models, which of the following represents a species that acts as a catalyst for the reaction?

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