\textbf{231 –} In the equilibrium reaction of ethanol and acetic acid in an acidic medium, approximately what percentage of the reaction products form the compound with the formula $(\text{H} = 1,\ \text{C} = 12,\ \text{O} = 16\ \text{: g.mol}^{-1})$?
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(1) $70.45$ \hspace{1cm} (2) $\Delta\circ$ \hspace{1cm} (3) $75.25$ \hspace{1cm} (4) $\Lambda\text{r}$
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