Chemistry

Chemistry

Problem

Three elementary reactions have the following overall energy changes: Reaction 1: ΔE=−50 kJ mol−1\Delta E = -50\,\text{kJ}\,\text{mol}^{-1}; Reaction 2: ΔE=+20 kJ mol−1\Delta E = +20\,\text{kJ}\,\text{mol}^{-1}; Reaction 3: ΔE=0 kJ mol−1\Delta E = 0\,\text{kJ}\,\text{mol}^{-1}. Based solely on these values, which reaction(s) are product-favoured at equilibrium? a) Reaction 3 only b) Reaction 2 only c) Reaction 1 only d) Reactions 1 and 3

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