Chemistry

Chemistry

Problem

A reaction has an enthalpy change of ΔH=−75 kJ mol−1\Delta H= -75\,\text{kJ}\,\text{mol}^{-1}. Which of the following best describes the relative potential energies of the reactants and products in a reaction-progress energy diagram for this reaction? a) The products lie 75 kJ mol−175\,\text{kJ}\,\text{mol}^{-1} higher in potential energy than the reactants. b) The products lie 75 kJ mol−175\,\text{kJ}\,\text{mol}^{-1} lower in potential energy than the reactants. c) The difference in potential energy cannot be determined without knowing the activation energy. d) The products lie 150 kJ mol−1150\,\text{kJ}\,\text{mol}^{-1} lower in potential energy than the reactants.

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