Organic Chemistry Basics 2 Question 36
36. Identify the correct order of boiling points of the following compounds:
$\mathrm{CH}{3} \mathrm{CH}{2} \mathrm{CH}{2} \mathrm{CH}{2} \mathrm{OH}$ (1) $\quad \mathrm{CH}{3} \mathrm{CH}{2} \mathrm{CH}_{2} \mathrm{CHO}$ (2)
$\mathrm{CH}{3} \mathrm{CH}{2} \mathrm{CH}_{2} \mathrm{COOH}$ (3)
(2002)
(a) $1>2>3$
(b) $3>1>2$
(c) $1>3>2$
(d) $3>2>1$
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Solution:
- Butanoic acid forms more exhaustive H-bonds than butanol and butanal do not form intermolecular H-bonds. Hence, boiling point order will be $3>1>2$.
