1.

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)?

Answer»

SOLUTION :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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