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3.0 g sample of bleaching powder is dissolved in 100 mL water. 20 mL of this suspension is acidified with HCl and treated with

3.0 g sample of bleaching powder is dissolved in 100 mL water. 20 mL of this suspension is acidified with HCl and treated with excess KI. The l2 liberated exactly requires 15.21 mL of 0.1 Na,S203 for complete reduction. Percentage available chlorine in the sample of bleaching powder is Backspace 7 89 4 5 6

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