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25 mL of H(2)O(2) solution were added t...

`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.

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