5. Kinetics and Equilibrium

Chemical Equilibrium — Quiz

Test your understanding of chemical equilibrium with 5 practice questions.

Practice Questions

Question 1

If the reaction quotient Q for A ⇌ B is greater than the equilibrium constant K, which way will the reaction proceed to reach equilibrium?

Question 2

For the equilibrium reaction A(g)+B(g)⇌C(g) with K_c=3.0, starting concentrations [A]=1.0 M, [B]=1.0 M, and [C]=0 M, what is [C]_eq?

Question 3

In the equilibrium PCl5(g)⇌PCl3(g)+Cl2(g), the partial pressures are p(PCl5)=0.10 atm, p(PCl3)=0.30 atm, p(Cl2)=0.40 atm. If K_p=1.50, will the reaction shift and in which direction?

Question 4

For the reaction 2NO(g)+Cl2(g)⇌2ClNO(g) at 500 K with measured p(NO)=0.242 atm, p(Cl2)=0.605 atm, and p(ClNO)=1.38 atm, what is K_p?

Question 5

For the reaction 2SO2(g)+O2(g)⇌2SO3(g) at 500 K, if K_c=500, what is K_p? (Use R=0.0821 L·atm·K^{-1}·mol^{-1})