Calculate the acentric factor for ethanol. The vapour pressure of methanol can be estimated from the following equation:

\[ \log _{10} P^{\mathrm{Sat}}=8.1122-\frac{1592.864}{t+226.184} \]

where \(P^{\text {Sat }}\) is in \(\mathrm{mm} \mathrm{Hg}\) and \(t\) is in \({ }^{\circ} \mathrm{C}\). The critical constants for ethanol are \(T_{\mathrm{C}}=\) \(508.9 \mathrm{~K}\) and \(P_{\mathrm{C}}=59.48\) bar.