Question

Good wine will turn to vinegar if it is left exposed to air, because the alcohol is oxidized to acetic acid. The equation for the reaction is $$\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}(l)+\mathrm{O}_{2}(g) \longrightarrow \mathrm{HC}_{2} \mathrm{H}_{3} \mathrm{O}_{2}(l)+\mathrm{H}_{2} \mathrm{O}(l)$$ Calculate $\Delta S^{\circ}$ for this reaction in $\mathrm{J} \mathrm{K}^{-1}$.

          Good wine will turn to vinegar if it is left exposed to air, because the alcohol is oxidized to acetic acid. The equation for the reaction is
$$\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}(l)+\mathrm{O}_{2}(g) \longrightarrow \mathrm{HC}_{2} \mathrm{H}_{3} \mathrm{O}_{2}(l)+\mathrm{H}_{2} \mathrm{O}(l)$$
Calculate $\Delta S^{\circ}$ for this reaction in $\mathrm{J} \mathrm{K}^{-1}$.

Added by Tracy O.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Sri K

03/31/2023

Step 1

The standard molar entropies (in J K^{-1} mol^{-1}) for the substances involved in the reaction are as follows: $$S^{\circ}(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}(l)) = 160.7$$ $$S^{\circ}(\mathrm{O}_{2}(g)) = 205.2$$ $$S^{\circ}(\mathrm{HC}_{2} Show more…

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Good wine will turn to vinegar if it is left exposed to air, because the alcohol is oxidized to acetic acid. The equation for the reaction is $$\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}(l)+\mathrm{O}_{2}(g) \longrightarrow \mathrm{HC}_{2} \mathrm{H}_{3} \mathrm{O}_{2}(l)+\mathrm{H}_{2} \mathrm{O}(l)$$ Calculate $\Delta S^{\circ}$ for this reaction in $\mathrm{J} \mathrm{K}^{-1}$.