1. Tardigrade
  2. Question
  3. Chemistry
  4. Consider the following substances 1. Propan-2-ol 2. Prpanone 3. 2-methyl propene The correct sequence of increasing order of boiling point is

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Q. Consider the following substances

$1.$ Propan-2-ol

$2.$ Prpanone

$3.$ 2-methyl propene

The correct sequence of increasing order of boiling point is

NTA AbhyasNTA Abhyas 2020Chemical Bonding and Molecular Structure

Solution:

The high b.p. of the alcohol is due to intermolecular H-bonding. Carbonyl compounds and alkene have no H's for H-bonding. The dipole-dipole forces of carbonyl compounds cause them to have higher boiling points than alkene.

Hence, the correct sequence of increasing order of boiling point is 1 > 2 > 3.