The correct options (s) to distinguish nitrate salts of Mn^(2+) and Cu^(2+) taken separately is (are)

The correct options (s) to distinguish nitrate salts of Mn^(2+) and Cu

1.	The correct options (s) to distinguish nitrate salts of Mn^(2+) and Cu^(2+) taken separately is (are)
Answer» `Mn^(2+)` show the CHARACTERISTIC GREEN colour in the flame test only `Cu^(2+)` show the formation of precipitate by PASSING `H_(2)S` in acidic medium Only `Mn^(2+)` show the formation of precipitate by passing `H_(2)S` in faintly basic medium `Cu^(2+)//Cu` has higher reduction potential than `Mn^(2+)//Mn` (measured under similar conditions) Solution :only `Cu^(2+)` ions can give a precipitate (black) by passing `H_(2)S` GAS in the acidic medium. `E^(@) Cu^(2)//Cu (+0.34V)` is higher than `E^(@)Mn^(2+)//Mn (-1.18V)` in the electrochemical series.