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The purity of H(2)O(2) in a given sample...

The purity of `H_(2)O_(2)` in a given sample is 85%. The weight of impure sample of `H_(2)O_(2)` which required 10 ml of `M//5 KMnO_(4)` solution in a titration in acidic medium is 0.1 x. Find x?

Text Solution

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The correct Answer is:
2
M eq `MnO_(4)^(Theta)` = m eq of `H_(2)O_(2)`
`10xx(1)/(5)xx5` = m eq of `H_(2)O_(2)`
m. eq `H_(2)O_(2)` = 100 meq
weight of `H_(2)O_(2)=10xx10^(-3)xx(34)/(2)=0.17gm`
wt of imure `H_(2)O_(2)=(100)/(85)xx0.17=0.2gm`
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