5. Chemical Reactions

Reaction Rates — Quiz

Test your understanding of reaction rates with 5 practice questions.

Practice Questions

Question 1

Which of the following best describes the effect of increasing the temperature on the rate constant $k$ in the Arrhenius equation?

Question 2

A reaction follows the rate law $rate = k[A]^2$. If the concentration of $[A]$ is doubled, what happens to the reaction rate?

Question 3

Which of the following best explains why increasing the temperature generally increases the reaction rate?

Question 4

A reaction has a rate law $rate = k[A][B]$. If the concentration of $[A]$ is tripled and the concentration of $[B]$ is halved, what happens to the reaction rate?

Question 5

In a reaction, the activation energy is $75 \, kJ/mol$. According to the Arrhenius equation, what is the effect of increasing the temperature from $300 \, K$ to $310 \, K$ on the rate constant $k$?