JEE Main202427 Jan 2024Evening ShiftChemistryGeneral Organic ChemistryActual
The molecular formula of second homologue in the homologous series of mono carboxylic acids is _________.
Options
- AC 3 H 6 O 2
- BC 2 H 4 O 2
- CCH 2 O
- DC 2 H 2 O 2
Correct answer
B. C 2 H 4 O 2
Step-by-step solution
The general molecular formula for carboxylic acid is C n H 2 n + 1 COOH . In organic chemistry, a homologous series is a sequence of compounds with the same functional group and similar chemical properties in which the members of the series can be branched or unbranched, or differ by molecular formula of CH 2 and molecular mass of 14 u . Second homologue : CH 3 COOH = C 2 H 4 O 2 Hence, the answer is B.