Question

According to Le Chatelier’s principle, what always happens to the equilibrium of a reaction when the temperature is reduced?

A.) It shifts to the right.
B.) It shifts to the left.
C.) It shifts in the exothermic direction.
D.) It shifts in the endothermic direction.

Answer 1

It shifts in the exothermic direction

Answer 2

For an exothermic reaction, heat is a product. And if temperature is reduced, that is essentially like removing a product, and so it will shift towards the product (which would be the exothermic side).
For an endothermic reaction, heat is a reactant.And if temperature is reduced, that is essentially like removing a reactant, and so it will shift towards the reactants (which would be the exothermic side).

The correct answer is C) It shifts in the exothermic direction.