When KI in acidic medium were mixed in 50ml H_2O_2liberated I_2requires 20ml of 0.1N hypo. What is strength of H_2O_2.

When KI in acidic medium were mixed in 50ml H_2O_2liberated I_2require

1.	When KI in acidic medium were mixed in 50ml H_2O_2liberated I_2requires 20ml of 0.1N hypo. What is strength of H_2O_2.
Answer» 6.8 g/litre 0.68 g/litre 680 g/litre 68.0 g/litre Solution :No of milli EQUIVALENTS of `H_2O_2` = No of milli equivalents of HYPO No of milli equivalents of `H_(2)O_(2)= 20 xx 0.1= 2` No of milli moles of `H_2O_2=1` `:.` 1Lof `H_2 O_2`contain `1000/50 =20`millimoles `:.` strength = `20 xx 34 xx 10^(-3)` g = 0.68 g/L