Chemistry

Problem

Four substances each has a molar mass close to

44\,\text{g\,mol}^{-1}

. At

25\,^{\circ}\text{C}

, which substance is expected to have the highest vapor pressure? a)

\mathrm{CH_3OCH_3}

(dimethyl\;ether) b)

\mathrm{C_3H_8}

(propane) c)

\mathrm{CH_3CH_2OH}

(ethanol) d) All four substances will have approximately the same vapor pressure