Which statement is true for solution of 0.020 M `H_(2)SO_(4)` ?

Options

A. 2 litre of the solution contains 0.20 mole of `SO_(4)^(2-)`
B. 2 litre of the solution contains 0.080 mole of`H_(3)O^(+)`
C. 1 litre of the solution contains 0.020 mole of `H_(3)O^(+)`
D. 1 litre of the solution contains 0.04 mole of`SO_(4)^(2-)`

Answer

B

Explanation

`H_(2)SO_(4)` is dibasic acid. 0.02 M 1 Lit. `H_(2)SO_(4)` contains 0.04 mole of `H^(+)` but `H^(+)` combines with `H_(2)O` to form `H_(3)O^(+)` . Hence 2 Lit. 0.02 M `H_(2)SO_(4)` contains 0.08 mole of `H_(3)O^(+)`.