The following reaction is at equilibrium at a pressure of 1 atm, in a closed container. NaOH(s) + CO₂(g) ⇄ NaHCO₃(s) ΔH°_rxn

Question

The following reaction is at equilibrium at a pressure of 1 atm, in a closed container. NaOH(s) + CO₂(g) ⇄ NaHCO₃(s) ΔH°_rxn < 0
Which, if any, of the following actions will decrease the concentration of CO₂ gas present at equilibrium?

Quizplus · Accepted Answer

According to Le Chatelier's principle, decreasing the temperature of an exothermic reaction at equilibrium will shift the equilibrium towards the side with higher heat, which in this case is the reactant side. Therefore, the concentration of CO₂ gas present at equilibrium will decrease. No other option provided will decrease the concentration of CO₂ gas at equilibrium.

The Following Reaction Is at Equilibrium at a Pressure of 1