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Q.

To a 25 mL  H2O2 solution, excess of acidified solution of potassium iodide was added. The iodine liberated required 20 mL of 0.3N sodium thiosulphate solution. Calculate the volume strength of  H2O2 solution.

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Detailed Solution

(1.33) 

Meq of H2O2 = Meq of  I2
= Meq of Na2S2O3
Volume strength of H2O2
= N x 5.6

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