Weak dibasic acids among the following

Options

A. `H_(2)SO_(4)`
B. `H_(2)S`
C. `H_(2)O_(2)`
D. `H_(2)SO_(5)`

Answer

B, C

Explanation

The aqueous solution of `H_(2)S` act as a weak dibasic acid. Similarly `H_(2)O_(2)` also
`{:(H_(2)S hArr H^((+))+HS^((-))),(ul(HS^((-)) to H^((+))+S^(2(-)))),(""H_(2)S hArr2H^((+))+S^(2(-))):}`
`H_(2)S` is weaker than carbonic acid.
`{:(H_(2)O_(2)toH^((+))+HO_(2)^((-))),(ul(H_(2)^((-))to H^((+))+O_(2)^(2(-)))),(H_(2)O_(2) to 2H^((+))+O_(2)^(2(-))):}`