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. Molarity of H_(2)O_(2) 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. Molarity of H_(2)O_(2) solution is
Answer» `8xx10^(-3)M` `4xx10^(-3)M` `5XX10^(-3)M` None of these 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)` Eqts of `H_(2)O_(2)` = EQ `Na_(2)S_(2)O_(3)` `(2xx50)/(1000)xxM=(1xx20)/(1000)xx0.04impliesM=8xx10^(-3)`