Question

Place the following substances in order of increasing boiling point. CH3CH2CH2OH Ne CH3OCH3 Place the following substances in order of increasing boiling point. CH3CH2CH2OH Ne CH3OCH3 CH3OCH3 < Ne < CH3CH2CH2OH CH3CH2CH2OH < CH3OCH3 < Ne Ne < CH3OCH3 < CH3CH2CH2OH CH3CH2CH2OH < Ne < CH3OCH3 Ne < CH3CH2CH2OH < CH3OCH3

Answer 1

Answer: Option (c) is the correct answer.

Explanation:

Boiling point is the temperature at which vapor pressure of a liquid becomes equal to the atmospheric pressure.

More strong interactions present in the atoms of a compound more heat is required to break it. Hence, greater will be its boiling point.

In $CH_{3}CH_{2}CH_{2}OH$ there will be strong dipole-dipole interactions because this compound has hydrogen bonding. Whereas in $CH_{3}OCH_{3}$ there is no hydrogen bonding taking place.

Hence, $CH_{3}OCH_{3}$ will have weak interactions as compared to $CH_{3}CH_{2}CH_{2}OH$. And, neon being a noble gas is stable in nature and does not react easily. Hence, it will have low boiling point.

Thus, we can conclude that given substances are placed in order of increasing boiling point as follows.

       Ne < $CH_{3}OCH_{3}$ < $CH_{3}CH_{2}CH_{2}OH$