The product obtained at anode when 50% `H_(2)SO_(4)` aqueous solution is electrolysed using platinum electrodes, is

Options

A. `H_(2)SO_(3)`
B. `H_(2)S_(2)O_(8)`
C. `O_(2)`
D. `H_(2)`

Answer

B

Explanation

The following reactions occurs when `H_(2)SO_(4)(aq)` is electrolysed.
`2H_(2)SO_(4) hArr 2HSO_(4)^(-)+2H^(+)`
`2HSO_(4)^(-)toH_(2)S_(2)O_(8)+2e^(-)` (At anode)
`therefore` The product obtained is `H_(2)S_(2)O_(4)`.