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Problem 43

Sulfur dioxide is released in the combustion of coal. Scrubbers use aqueous slurries of calcium hydroxide to remove the $\mathrm{SO}_{2}$ from flue gases. Write a balanced equation for this reaction and calculate $\Delta S_{\mathrm{rxn}}^{\circ}$ at 298 $\mathrm{K}\left[S^{\circ} \text { of } \mathrm{CaSO}_{3}(s)=101.4 \mathrm{J} / \mathrm{mol} \cdot \mathrm{K}\right]$

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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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