The increasing order of boiling points of above-mentioned alcohols is:
(i) 1, 2-dihydroxy benzene (ii) 1, 3-dihydroxy benzene
(iii) 1, 4-dihydroxy benzene (iv) hydroxy benzene

Question

The increasing order of boiling points of above-mentioned alcohols is: (i) 1, 2-dihydroxy benzene (ii) 1, 3-dihydroxy benzene (iii) 1, 4-dihydroxy benzene (iv) hydroxy benzene

TestHub · Accepted Answer

Boiling point increases with increase in intermolecular hydrogen bonding. In 1,4–Dihydroxy benzene intermolecular hydrogen bonding occurs . Therefore it has highest boiling point whereas hydroxy benzene consist of only one–OH group therefore the intermolecular hydrogen bond are weak.

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