Which of the following can act as both Bronsted acid and a Bronsted base?
i) `HCOO^(-)` ii) `NH_(2)` iii) `NH_(3)` Iv) `HSO_(4)^(-)`

Options

A. (i) & (ii)
B. (ii) & (iii)
C. (ii) & (iv)
D. (i) & (iv)

Answer

C

Explanation

`H^(+)` donor and `H^(+)` acceptor acts both `B.A` & `B.B`