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 ceric 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 :

Ceric ammonium sulphate and potassium permanganate are used as oxidisi

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 ceric 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 :Oxidation of FERROUS ammonium sulphate by `KMnO_(4)` is : `2KMnO_(4)+8H_(2)SO_(4)+10 FeSO_(4).(NH_(4))_(2)SO_(4).6H_(2)O to ` `K_(2)SO_(4)+2MnSO_(4)+5Fe_(2)(SO_(4))_(3)+10(NH_(4))_(2)+SO_(4)+68H_(2)O` `therefore 1 " MOLE of" FeSO_(4)(NH_(4))_(2)SO_(4).6H_(2)O " consumes " 1//5` mole of `KMnO_(4)` `Fe^(2+)+Ce^(4+) to Fe^(3+)+Ce^(3+)` Required ratio`=(1)/(1//5)=5.0`