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Problem 21

Predict the sign of $\Delta S$ for each process: …

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Problem 20

Predict the sign of $\Delta S$ for each process
$$\begin{array}{l}{\text { (a) } \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}(g)(350 \mathrm{K} \text { and } 500 \text { torr) } \longrightarrow} \\ {\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}(g)(350 \mathrm{K} \text { and } 250 \text { torr) }}\end{array}$$
$$\begin{array}{l}{\text { (b) } \mathrm{N}_{2}(g)(298 \mathrm{K} \text { and } 1 \mathrm{atm}) \longrightarrow \mathrm{N}_{2}(a q)(298 \mathrm{K} \text { and } 1 \mathrm{atm})} \\ {\text { (c) } \mathrm{O}_{2}(a q)(303 \mathrm{K} \text { and } 1 \mathrm{atm}) \longrightarrow \mathrm{O}_{2}(g)(303 \mathrm{K} \text { and } 1 \mathrm{atm})}\end{array}$$

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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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