JAMB Chemistry 2019 Paper

Concept:The reaction is endothermic ($\Delta H = +Q\,\mathrm{kJ}$), so heat can be treated as a reactant for the forward reaction.Explanation:For an endothermic reaction, increasing the temperature adds heat.By Le Chatelier's principle, the equilibrium shifts to the right to absorb the added heat.This increases the concentration of the product $P$.A catalyst speeds up both forward and reverse reactions equally, so it does not change equilibrium position.Increasing the concentration of $P$ would shift the reaction to the left, reducing the product.Decreasing the temperature would favour the reverse exothermic reaction, reducing $P$.Answer:Increasing the temperature (Option C).