Chemistry

Chemistry

Problem

In a hypothetical reaction, the potential energy of the reactants is 35 kJ mol⁻¹ and that of the products is 15 kJ mol⁻¹. Which statement best describes the forward reaction? a) It is exothermic because ΔH=+20 kJ mol−1\Delta H = +20\ \text{kJ mol}^{-1}. b) It is exothermic because ΔH=−50 kJ mol−1\Delta H = -50\ \text{kJ mol}^{-1}. c) It is exothermic because ΔH=−20 kJ mol−1\Delta H = -20\ \text{kJ mol}^{-1}. d) It is endothermic because ΔH=−20 kJ mol−1\Delta H = -20\ \text{kJ mol}^{-1}.

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