Four substances each has a molar mass close to

CHEMISTRY · Single correct · A Level · Chemistry · Bonding · Bonding

Problem

Four substances each has a molar mass close to 44 g mol−144\,\text{g\,mol}^{-1}. At 25 ∘C25\,^{\circ}\text{C}, which substance is expected to have the highest vapor pressure? (a) CH3OCH3\mathrm{CH_3OCH_3} (dimethyl\;ether) (b) C3H8\mathrm{C_3H_8} (propane) (c) CH3CH2OH\mathrm{CH_3CH_2OH} (ethanol) (d) All four substances will have approximately the same vapor pressure

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