Question

Consider the acidity of the carboxylic acids:
(1) `PhCOOH` (2) `o-NO_(2) C_(6) H_(4) COOH`
(3) `p-NO_(2) C_(6) H_(4) COOH` (4) `m-NO_(2) C_(6) H_(4) COOH`
Which of the following order is correct?
A. 2 `gt` 3 `gt` 4 `gt` 1
B. 2 `gt` 4 `gt` 3 `gt` 1
C. 2 `gt` 4 `gt` 1 `gt` 3
D. 1 `gt` 2 `gt` 3 `gt` 4

Answer 1

Correct Answer - A
This is correct order for acidic nature (ortho effect).