MHT CET202312 May 2023Evening ShiftChemistryCarboxylic Acid DerivativesActual
Select the CORRECT increasing order of boiling points of alcohols, amines and carboxylic acids of comparable molar mass from the following.
Options
- AAlcohols < Amines < Carboxylic acids
- BAmines < Carboxylic acids < Alcohols
- CAmines < Alcohols < Carboxylic acids
- DCarboxylic acids < Alcohols < Amines
Correct answer
C. Amines < Alcohols < Carboxylic acids
Step-by-step solution
N - H bonds in amines are less polar than O - H bond in alcohols. Carboxyl group (- COOH ) of carboxylic acid contains O - H bond which is responsible for formation of hydrogen bonding. Strength of hydrogen bonding in carboxylic acid is greater than that of alcohols.