Question

Rank the following in order of increasing vapor pressure at 298 k: CH3CH2OH, CH3OCH3, CH3CH2CH3.
Wouldn't you think CH3CH2CH3 would be the highest since it has only London forces. CH3OCH3 would have the next (that's acetone) and you know that is volatile. Then ethyl alcohol has H bonding so should be the next one up. I believe I have ranked them in reverse order (from high to low).
CH3OCH3, CH3CH2CH3 , CH3CH2OH

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