The Following Reaction Is at Equilibrium at One Atmosphere, in a Closed

Multiple Choice

The following reaction is at equilibrium at one atmosphere, in a closed container. NaOH(s) + CO₂(g) ⇄ NaHCO₃(s)
Which, if any, of the following actions will decrease the total amount of CO₂ gas present at equilibrium?

A) Adding N ₂ gas to double the pressure
B) Adding more solid NaOH
C) Decreasing the volume of the container
D) Removing half of the solid NaHCO ₃
E) None of these choices are correct.