1.

Oxygen and hydrogen gases are produced at the anode and cathode during the electrolysis of fairly concentrate aqueous solution of :

Answer»

`K_2SO_4`
`AgNO_3`
`H_2SO_4`
`NAOH`

SOLUTION :Anode : `2H_2O to O_2 +4e^(-) + 4H^(+)` , Cathode :`2H_2O + 2e^(-) to H_2 + 2OH^(-)`
Anode : `4OH^(-) to 2H_2O + O_2 + 2e^(-)` , Cathode : ` 2H^(+) + 2e^(-) to H_2`


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