Question

On the basis of intermolecular forces predict the correct order of decreasing boiling points of the compounds –

• A. $CH_{3}OH > H_{2} > CH_{4}$
• B. $CH_{3}OH > CH_{4} > H_{2}$
• C. $CH_{4} > CH_{3}OH > H_{2}$
• D. $H_{2} > CH_{4} > CH_{3}OH$

Answer 1

Answer: (B)

$CH_{3}OH > CH_{4} > H_{2}$

Answer 2

Alcohol involves H bonding ; also molar wt. of
$CH_{4}$> mol of$H_{2}$. Greater is molar wt. of covalent compound, higher is its b.p.