Statement I: On increasing the temperature, enthalpy of reaction may increase, decrease or remain co — Thermodynamics and Thermochemistry Chemistry Question

💡 Solution & Explanation

According to Kirchhoff's equation, ΔH(T2) - ΔH(T1) = ΔCp × (T2 - T1). Thus, ΔH may increase (ΔCp > 0), decrease (ΔCp < 0) or remain constant (ΔCp = 0) as temperature changes. This depends entirely on the heat capacities of the reactants and products, which explains the temperature dependence of enthalpy of reaction. Both statements are correct and Statement II is the correct explanation of Statement I.