Question

Arrange the following compounds in an increasing order of their indicated property :

(i) Benzoic acid, 4-Nitrobenzoic acid, 3, 4-Dinitrobenzoic acid.

4-Methoxybenzoic acid (acid strength)

(ii) CH₃CH₂CH(Br)COOH,

CH₃CH(Br)CH₂COOH

(CH₃)₂CHCOOH, CH₃CH₂CH₂COOH

(acid strength)

Answer 1

(i) 4-methoxybenzoic acid < benzoic acid < 4-nitrobenzoic acid < 3,4-dinitrobenzoic acid.

(ii) The overall acidic strength increases in the order : 

(CH₃)₂CHCOOH < CH₃CH₂CH₂COOH < CH₃CH(Br)CH₂COOH < CH₃CH₂CH(Br)COOH