### Calculate $\Delta G^{\circ}$ at 298 $\mathrm{K}$ …

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Problem 69

Calculate $K$ at 298 $\mathrm{K}$ for each reaction:
$$\begin{array}{l}{\text { (a) } \mathrm{HCN}(a q)+\mathrm{NaOH}(a q) \rightleftharpoons \mathrm{NaCN}(a q)+\mathrm{H}_{2} \mathrm{O}(l)} \\ {\text { (b) } \mathrm{SrSO}_{4}(s) \rightleftharpoons \mathrm{Sr}^{2+}(a q)+\mathrm{SO}_{4}^{2-}(a q)}\end{array}$$

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Chapter 20
Thermodynamics: Entropy, Free Energy, and the Direction of Chemical Reactions
CHEMISTRY: The Molecular Nature of Matter and Change 2016

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