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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:
D
20 mL 0.1 N `Na_2S_2O_3 = 20mL 0.1 NI_2`
` = 20 mL 0.1 NH_2O_2`
Normality of added `H_2O_2 = (20 xx 0.1)/25 = 0.08`
vol. strength `= 5.6 xx 0.08 = 0.448`
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