How does temperature affect the equilibrium? If we consider heat as a component of the equilibrium system (remember if a reaction is exothermic the heat term is found on the product side and if the reaction is endothermic the heat term is on the reactant side), then a temperature rise will increase Kc for a system that is endothermic and decrease Kc that is exothermic. Furthermore, if a reaction is endothermic an increase in temperature will cause the reaction to proceed to the product side (to remove the added heat). If a reaction is exothermic an increase in temperature will cause the reaction to proceed to the reactant side (to remove the added heat). When heat is removed from an endothermic system, the reaction will proceed to the reactant side to "replace" the heat. Conversely, when heat is removed from an exothermic system, the reaction will proceed to the product side to "replace" the heat and thus re-establish equilibrium. How does an increase in temperature affect the equilibrium concentration of the underlined substance and K for each of the following reactions? 1. The concentration of Ca(OH)2 and K will CaO(s)+H2O(l)Ca(OH)2(aq).H=82kJ 2. The concentration of CO2 and K will CaCO3(s)CaO(s)+CO2(g)H=178kJ 3. The concentration of SO2 and K will SO2(g)S(s)+O2(g)H=297kJ