Question:

Identify the correct order of boiling points of the following compounds: $CH_3CH_2CH_2CH_2OH(1) \, \, \, \, \, \, \, CH_3CH_2CH_2CHO (2) $ $CH_3CH_2CH_2COOH (3) $

Updated On: Jun 14, 2022
  • 1 > 2 > 3
  • 3 > 1 > 2
  • 1 > 3 > 2
  • 3 > 2 > 1
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The Correct Option is B

Solution and Explanation

Butanoic acid forms more exhaustive H-bonds than butanol and
butanal do not form intermolecular H-bonds. Hence, boiling
point order will be
$\hspace15mm 3 > 1 > 2 $
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Concepts Used:

Hydrocarbons - Reaction Mechanism

Hydrocarbons are organic compounds that are entirely made up of only two kinds of atoms – carbon and hydrogen. Typically, hydrocarbons are colourless gases that have very weak odours.

Mechanism of electrophilic substitution reactions:

According to experimental evidences, SE (S = substitution; E = electrophilic) reactions are supposed to proceed via the following three steps:

  1. Generation of the electrophile
  2. Formation of carbocation intermediate
  3. Removal of proton from the carbocation interm