Suppose we let the reaction below come to equilibrium. Then we decrease the total pressure, by increasing the volume of the container. What will be the effect on the numerical value of the equilibrium constant, K?
2SO2(g) + O2(g) 2SO3(g) + heat
a. It increases.
b. It decreases.
c. It does not change.
d. The question cannot be answered without knowing the initial value of K.
e. The question cannot be answered without knowing the value of ΔH0.
Answer: c. It does not change.