Question

Write the structural formulae of first six homologues of homologous series of straight
chain aliphatic carboxylic acids​

Answer 1

Answer:

Generally, aliphatic carboxylic acids are represented by R-COOH

Here R is an alkyl group.

1. First straight chain aliphatic carboxylic acid is H-COOH = Methanoic acid or Formic acid

2. Second straight chain aliphatic carboxylic acid is CH3-COOH = Ethanoic acid or Acetic acid

3. Third straight chain aliphatic carboxylic acid is CH3-CH2-COOH = Propanoic acid

4. Fourth straight chain aliphatic carboxylic acid is CH3-CH2-CH2-COOH = Butanoic acid

5. Fifth straight chain aliphatic carboxylic acid is CH3-CH2-CH2-CH2-COOH = Pentanoic acid

6. SIxth straight chain aliphatic carboxylic acid is CH3-CH2-CH2-CH2-CH2-COOH = Hexanoic acid