The species among the following, which can act as an acid and a base is

Options

A. A) `HSO_(4)^(-)`
B. B) `SO_(4)^(-2)`
C. C) `H_(3)O^(+)`
D. D) `CI^(-)`

Answer

a

Explanation

The species which can accept as well as donate `H^(+))`can act both as an acid and a base.`underset(base) (HSO_(4)^(-)) + H^(+) hArr H_(2)SO_(4)`
`underset(acid)(HSO_(4)^(-))+H^(+)`