Question:

CALCULATE (AGrxn) for a reaction

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Calculate ΔG°rxn for the following reaction at 25.0°C

2H2O(g) S(s) → 2H2S(g) O2(g)

given ΔH°rxn = 442.4 kJ and ΔS°rxn = 206.9 J/K

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  1. ΔG°rxn = ΔH°rxn - T°·ΔS°rxn

    = 442.4kJ - 298.15K · 0.2069kJ/K

    = 380.7kJ

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