We flash distill a mixture that is \(5.0 \mathrm{~mol} \%\) methane, \(12.3 \mathrm{~mol} \%\) ethane, 11.5 \(\mathrm{mol} \%\) n-butane, \(22.2 \mathrm{~mol} \%\) n-pentane, \(25.4 \mathrm{~mol} \mathrm{\%} \mathrm{n-hexane,} \mathrm{and} 23.6 \mathrm{~mol} \%\) n-heptane. Use Eq. (2-28) and a spreadsheet.

a. If \(\mathrm{p}=14.7 \mathrm{psia}\) and \(\mathrm{V} / \mathrm{F}=0.45\), what temperature is the drum at?

b. If \(\mathrm{T}_{\text {drum }}=110^{\circ} \mathrm{F}\) and \(\mathrm{p}=19.0 \mathrm{psia}\), find \(\mathrm{V} / \mathrm{F}\).

c. If \(\mathrm{T}_{\text {drum }}=135^{\circ} \mathrm{F}\) and \(\mathrm{V} / \mathrm{F}=0.62\), find \(\mathrm{p}_{\text {drum }}\).

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In K = a/T+ a/T ar 1/T + a2/T + a16 + a ln p + a2/p2. apl In p+ ap2/p + ap3/p