n-factors for Cu_(2)S and Cus when they react with KMnO_4 in acidic medium are (neglecting the further oxidation of released SO_2

n-factors for Cu_(2)S and Cus when they react with KMnO_4 in acidic me

1.	n-factors for Cu_(2)S and Cus when they react with KMnO_4 in acidic medium are (neglecting the further oxidation of released SO_2
Answer» 7,7 6,6 6,8 8,6 Solution :i) `{:(Cu_(2)^(2+)rarr2Cu^(2+)+2E^(-)(n=2)),(S^(-2)rarrSO_(2)+6E^(-)(n=6)):}]` (n=8) ii) `CU^(2+)` does not change only `S^(2-)` changes to `SO_2 `hence n = 6