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300ml of "0.1M KMnO"(4) in acid media is...

300ml of `"0.1M KMnO"_(4)` in acid media is taken for oxidation of hydrogen peroxide. It is firstly diluted to 1 litre and then 50 ml of the solution is found to oxidize 40ml of `H_(2)O_(2)` to `O_(2)` . What will be the volume strength of `H_(2)O_(2)`?

Text Solution

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m-eq of `KMnO_(4)` in 300 ml solution `= 300 xx0.5 = 150" "7.5 =40xxN_(H_(2)O_(2))`
m-eq of `KMnO_(4)` in 1 litre diluted solution = 150`" or "N_(H_(2)O_(2))=0.1875N`
m-eq of `KMnO_(4)` in 50ml solution =` 7.5 = "m-eq. of "H_(2)O_(2)" Volume strength "=5.6xx0.1875="1.05 vol"`
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