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 affect the equilibrium composition of a homogeneous mixture of gases as it only speeds up the reaction rate without altering the position of the equilibrium.

Options B, C, and D would impact the equilibrium composition:
B) Addition of reactants would shift the equilibrium towards the product side to counteract the increase in concentration on the reactant side.
C) Decreasing the temperature would shift the equilibrium to the side with the higher enthalpy (heat) of reaction to compensate for the lost energy, which will depend on the specific reaction.
D) Increasing the volume would shift the equilibrium to the side with more moles of gas to counteract the increase in space.

Which of the Following Changes in Reaction Conditions Will Not