Question

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

Answer 1

Answer: A. adding heat to the product mixture.

Explanation: I got this right on Edmentum.

Answer 2

Answer is: A. adding heat to the product mixture.

Balanced chemical reaction:

CO(g) + 3H₂(g) ⇄ CH₄(g) + H₂O(g); ΔH = -206.1 kJ.

This reaction is exothermic, which means that heat is released.

According to Le Chatelier's principle when the reaction is exothermic heat is included as a product and when the temperature increased, the heat of the system increase, so the system consume some of that heat by shifting the equilibrium to the left.