`25 mL ` of `H_(2)O_(2)` solution were added to excess of acidified solution of `KI`. The iodine so liberated required `20 mL` of `0.1N Na_(2)S_(2)O_(3)` for titration Calculate the strength of `H_(2)O_(2)` in terms of normalility, percentage and volumes.
(b) To a `25 mL H_(2)O_(2)` solution, excess of acidified solution of `KI` was added. The iodine liberated required `20 mL` of `0.3N` sodium thiosulphate solution. Calculate the volume strength of `H_(2)O_(2)` solution.
A. `0.04 N, 0.136%`
B. `0.08 N,0.136%`
C. `0.08 N, 0.163%`
D. `0.02 N,0.163%`
