7. Equilibrium

Calculating Equilibrium Concentrations — Quiz

Test your understanding of calculating equilibrium concentrations with 5 practice questions.

Practice Questions

Question 1

In an equilibrium problem, what does the equilibrium constant $K_c$ compare?

Question 2

A reaction has the equilibrium expression $K_c = \dfrac{[C]^2}{[A][B]}$. If $[C]$ increases at equilibrium while $[A]$ and $[B]$ stay the same, what does this suggest about the value of $K_c$?

Question 3

For the reaction $A \rightleftharpoons B$, the equilibrium constant is $K_c = 4.0$. Which statement is best supported?

Question 4

What is the correct equilibrium expression for the reaction $2NO_2(g) \rightleftharpoons N_2O_4(g)$?

Question 5

For the reaction $H_2(g) + I_2(g) \rightleftharpoons 2HI(g)$, the equilibrium concentrations are $[H_2] = 0.20\,M$, $[I_2] = 0.20\,M$, and $[HI] = 0.80\,M$. What is $K_c$?