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Types of Hydrogen Bonding

In which of t...

Question

In which of the following I is more volatile than II?

A

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B

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C

\begin{matrix} (I) H_{2} O & (I I) H_{2} S \end{matrix}

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D

(I) C H_{3} C H_{2} - O H (I I) C H_{3} - O - C H_{3}

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Solution

The correct options are
A
B
(a)
Intermolecular H - bonding makes boiling point higher than that of I. Thus, I is more volatile.
(b)

II. Intermolecular H - bonding makes boiling point higher than of intramolecular H-bonding. Thus, I is more volatile.

(c) Boiling point of $H_{2} O >> H_{2} S$ due to H- bonding
(d) Boiling point of $C H_{3} C H_{2} O H$ (due to H - bonding) $>> C H_{3} - O - C H_{3}$

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