50 ml of given H_(2)O_(2) solution is added to excess KI solution in acidic medium. The liberated I_(2) requires 20 ml of 0.04 M standard Hypo solution. Weight of H_(2)O_(2) present in 250 ml of given solution is

50 ml of given H_(2)O_(2) solution is added to excess KI solution in a

1.	50 ml of given H_(2)O_(2) solution is added to excess KI solution in acidic medium. The liberated I_(2) requires 20 ml of 0.04 M standard Hypo solution. Weight of H_(2)O_(2) present in 250 ml of given solution is
Answer» `0.034g` `0.068g` `0.136g` none Solution :`2I^(-)+H_(2)O_(2)+2H^(+)rarr2H_(2)O+I_(2)` `I_(2)+2S_(2)O_(3)^(-2)rarr2I^(-)+S_(4)O_(6)^(-2)` `W_(H_(2)O_(2))=8XX10^(-3)XX(250)/(1000)xx34=0.068gm`