Question

In the compound given below the correct order of the acidity of the position X, Y and Z is
A. `ZgtXgtY`
B. `XgtYgtZ`
C. `XgtZgtY`
D. `YgtXgtZ`

Answer 1

Correct Answer - B
(i) Position (X) is most acidic due to `-COOH` group.
`-NH_3^(+)` group at position Y is more acidic than at Z because of presence of electron withdrawing `-COOH` group in close proximity. Hence `-NH_3^(+)` group at position Z is least acidic.