Question

Among the following the weakest base is
A. `H^(-)`
B. `CH_(3)^(-)`
C. `CH_(3)O^(-)`
D. `CI^(-)`

Answer 1

Correct Answer - D
Here we use the fact that the conjugate base of a stronger acid is a weaker base. Since HCI is a strong acid `(H_(2)` and `CH_(4)` are practically not acidic in nature while `CH_(3)OH` is a weak acid), `Cl^(-)` is the weakest conjugate base.