Consider the following gas-aqueous liquid equilibrium for a closed system at a constant temperature. O₂(g) O₂(aq) What is the effect on the equilibrium composition of the liquid when the partial pressure of O₂ gas above the liquid is decreased? A)The amount of O₂ dissolved in the liquid decreases. B)The amount of O₂ dissolved in the liquid increases. C)The amount of O₂ dissolved in the liquid does not change. D)Not enough information is provided to answer the question. E)Either A or B.

Question

Quizplus · Accepted Answer

According to Le Chatelier's principle, when the partial pressure of O₂ gas is decreased, the system tries to compensate by shifting the equilibrium to the side with more gas molecules. Therefore, some of the O₂ dissolved in the liquid will evaporate to restore the equilibrium. As a result, the amount of O₂ dissolved in the liquid decreases.

Consider the Following Gas-Aqueous Liquid Equilibrium for a Closed System