1.

KMnO_(4) acts as an oxidising agent in acidic medium. The number of moles of KMnO_(4) that will be needed to react with one mole of sulphide ions in acidic solution is

Answer»

`2//5`
`3//5`
`4//5`
`1//5`

Solution :`underset("2 mol")(2KMnO_4) + 3H_(2)SO_(4) rarr K_2SO_4 + 2MnSO_(4) + 8H_(2)O + 5S`
`therefore `1 MOLE of `S^(2-)` ions will REQUIRE `KMnO_4 = (2)/(5)` moles.


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