According to Le Chteliers principle, if energy is added to a system at equilibrium by heating it,the system will shift in the direction that consumes energy as a reactant.This means that the system?
When an equilibrium system is heated, the system can remove some of the added heat by shifting in the direction that uses up some of that heat energy as a reactant. This means that the system will shift away from the side of the equation where energy is written.