Account for the following:
(i) The boiling point of ethanol is higher than that of methanol.
(ii) Phenol is a stronger acid than an alcohol.
(iii) The boiling points of ethers are lower than isomeric alcohols.

Explanation

(i) Boiling point of ethanol is greater than methanol:
Hydrogen bonding is present in both, but with increasing molecular mass , Van der Waals. forces of attraction increases which increases boiling point.
(ii) Phenol is stronger acid than alcohol:

In phenol there is withdrawing `-C_(6)H_(5)` group present which facilitates the removal of a proton on the other hand in ROH, there is electron donating R group whcih makes the removal of proton difficult. After removal of proton, phenoxide ion is stabilized by resonance whereas alkoxide ion is but resonance stabilized.
(iii) Boiling point of ehters are lower than isomeric they do not involve hydrogen bonding whcih is present in alcohols.