Calculate Delta S° for the reaction 2Cl?(g) + SO?(g) ? SOCl?(g) + Cl?O(g) Substance: Cl?(g) SO?(g) SOCl?(g) Cl?O(g) S°(J/K?mol): 323.0 148.1 409.77 166.1 Multiple Choice -118.2 J/K 104.8 J/K 118.2 J/K 1270.0 J/K -218.2 J/K
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Calculate $\Delta G^{\circ}$ at 298 $\mathrm{K}$ for each reaction: $$\begin{array}{l}{\text { (a) } 2 \mathrm{NO}(g)+\mathrm{Cl}_{2}(g) \rightleftharpoons 2 \mathrm{NOCl}(g) ; K=1.58 \times 10^{7}} \\ {\text { (b) } \mathrm{Cu}_{2} \mathrm{S}(s)+\mathrm{O}_{2}(g) \rightleftharpoons 2 \mathrm{Cu}(s)+\mathrm{SO}_{2}(g) ; K=3.25 \times 10^{37}}\end{array}$$
Calculate $\Delta G^{\circ}$ at $298 \mathrm{~K}$ for each reaction: (a) $\mathrm{CO}(g)+\mathrm{Cl}_{2}(g) \rightleftharpoons \mathrm{COCl}_{2}(g) ; K=5.62 \times 10^{35}$ (b) $\mathrm{H}_{2} \mathrm{SO}_{4}(l) \rightleftharpoons \mathrm{H}_{2} \mathrm{O}(l)+\mathrm{SO}_{3}(g) ; K=4.46 \times 10^{-15}$
Consider the following reaction at $25^{\circ} \mathrm{C}$ : $$\mathrm{Cl}_{2}(g) \rightleftharpoons 2 \mathrm{Cl}(g) \quad K=1.0 \times 10^{-37}$$ (a) Calculate $\Delta G^{\circ}$ for the reaction at $25^{\circ} \mathrm{C}$. (b) Calculate $\Delta G_{\mathrm{f}}^{\circ}$ for $\mathrm{Cl}(g)$ at $25^{\circ} \mathrm{C}$.
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