1.

Ceric ammonium sulphate and potassium permanganate are used as oxidising agents in acidic medium for oxidation of ferrous ammonium sulphate to ferric sulphate. The ratio of number of moles of cerric ammonium sulphate required per mole of ferrous ammonium sulphate to the number of moles of KMnO_(4) required per mole of ferrous ammonium sulphate, is

Answer»

`5.0`
`0.2`
`0.6`
`2.0`

Solution :`Fe^(2+)+Ce^(4+) rarr Fe^(3+)+Ce^(3+)`
`5 Fe^(2+)+Mn O_(4)^(-)+8 H^(+) rarr 5 Fe^(3+)+ Mn^(2+) + 4H_(2)O`
`:. ("MOLES of cerric ammonium sulphate")/("Moles of potassium permagnate")=1/(1//5)=5.0`


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