Which of the following changes in reaction conditions will not alter the composition of a homogeneous equilibrium mixture of gases in a reaction having unequal moles of gaseous products and reactants?

Question

Quizplus · Accepted Answer

Addition of a catalyst does not alter the composition of an equilibrium mixture as it only speeds up the rate of the forward and reverse reactions equally.

B, C, and D all directly affect the position of the equilibrium and alter the composition of the mixture. Addition of reactants or products will shift the equilibrium in the direction of the less abundant species, while decreasing temperature or increasing pressure/volume will shift the equilibrium in the direction that yields fewer molecules of gas.

Which of the Following Changes in Reaction Conditions Will Not