Chemistry

Chemistry

Problem

Using the absolute molar entropies S∘S^{\circ} at 298 K listed below, determine the standard entropy change, ΔS∘\Delta S^{\circ}, for the combustion of graphite given by C(s)+O2(g)→CO2(g)\text{C}(s)+\text{O}_2(g)\rightarrow \text{CO}_2(g) S∘ (J mol−1 K−1):    CO2(g)=213.6,  C(s)=5.7,  O2(g)=205.0S^{\circ}\,(\text{J mol}^{-1}\,\text{K}^{-1}):\;\;\text{CO}_2(g)=213.6,\;\text{C}(s)=5.7,\;\text{O}_2(g)=205.0 a) +8.6  J mol−1 K−1+8.6\;\text{J mol}^{-1}\,\text{K}^{-1} b) −2.9  J mol−1 K−1-2.9\;\text{J mol}^{-1}\,\text{K}^{-1} c) +2.9  J mol−1 K−1+2.9\;\text{J mol}^{-1}\,\text{K}^{-1} d) +1.5  J mol−1 K−1+1.5\;\text{J mol}^{-1}\,\text{K}^{-1}

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