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25 ml of H(2)O(2) solution was added to ...

25 ml of `H_(2)O_(2)` solution was added to excess of acidified Kl solution. The iodine so liberated required 20 ml. of 1 N sodium thiosulphate solution. What is volume strength of `H_(2)O_(2)

A

`0.224`

B

`0.112`

C

`0.056`

D

`0.448`

Text Solution

Verified by Experts

The correct Answer is:
B
`20 mL 0.1 N N_(a)S_(2)O_(3)=20 mL 0.1 NI_(2)=20 ml 0.1 NH_(2)O_(2)`
Normality of added `H_(2)O_(2)=(20xx0.1)/(25)=0.08`
vol. Strength `=5.6xx0.08=0.448`
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