5. Kinetics

Pre-equilibrium Approximation — Quiz

Test your understanding of pre-equilibrium approximation with 5 practice questions.

Read the lesson first

Practice Questions

Question 1

What does the pre-equilibrium approximation assume about the early steps of a reaction mechanism?

Question 2

In a reaction mechanism, what is an intermediate?

Question 3

Why is the pre-equilibrium approximation useful when deriving a rate law?

Question 4

A mechanism has a fast first step that reaches equilibrium and a slow second step that determines the rate. Which step is used to write the initial rate law?

Question 5

If a fast equilibrium step produces an intermediate $I$, which relationship is typically used to solve for $[I]$?
Pre-equilibrium Approximation Quiz — AP Chemistry | A-Warded