What would cause the equilibrium to shift left in this reaction? co + 3h2 ? ch4 + h2o a. adding heat to the product mixture b. a faster rate of forward reaction c. increased collisions between co and h2 d. the escape of water from the mixture e. placing the mixture in a cold water bath

Option A.

Explanation:

To decrease pressure by increasing volume, the equilibrium of the reaction shift to the left as the reactant side has greater number of moles than the product side.

Equilibrium also shifts to the left if temperature decreases.

Given equation is

In this case, equilibrium shifts to the left on adding heat to the product mixture .