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Calculate Δ\Delta S \circ at 25 \circ C for the Reduction of PbO(s), 2PbO(s) + C(s)

Question 32

Multiple Choice

Calculate Δ\Delta S \circ at 25 \circ C for the reduction of PbO(s) , 2PbO(s) + C(s) \rarr 2Pb(s) + CO2(g) given these absolute entropies: S(J/K mol) PbO(s) 69.45C(s) 5.7Pb(s) 64.89CO2(g) 213.6\begin{array}{lc}&\mathrm{S}^{\circ}(\mathrm{J} / \mathrm{K} \cdot \mathrm{~mol}) \\\hline\mathrm{PbO}(\mathrm{s}) & 69.45 \\\mathrm{C}(\mathrm{s}) & 5.7 \\\mathrm{Pb}(\mathrm{s}) & 64.89 \\\mathrm{CO}_{2}(\mathrm{g}) & 213.6\end{array}


A) +198.8 J/K·mol
B) +488.0 J/K·mol
C) +353.6 J/K·mol
D) -203.3 J/K·mol
E) +203.3 J/K·mol

Correct Answer:

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