Question

sited from acidified copper sulphate and alkaline cuprous cyanide. If the same
15. Copper can be depos
4) A13+
CU
prent is passed for a definite time.
1 The amount of copper deposited from acid
The amount of copper deposited from alkaline cure
The same amount of copper will be deposited
pper deposited from acidic copper sulphate will be higher
copper deposited from alkaline cuprous cyanide will be higher
4) None of the above
lectrons involved in the electrolyticdeposition of 63.5 g. of Cu from an aq. CuSO, is
16. The no. of electrons inyo
1) 6.0 x 1023
2) 3.011 x 1023
3) 12.04 x 1023
4) 6.02 x 1022
ulomb of charge passes through solutions of AgNO, and CuSO,. The ratio of the amounts of
17. One coulomb of charge p
aver and copper deposited on platinum electrodes used for electrolysis is
2) 54 : 31.75
3) 108 : 31.75 4) 215.8 : 31.75
1) 108 : 63.5
18 The weight in grams of o, formed at Pt anode during the electrolysis of an aq. K,SO, solution durin
the passage of one coulomb of electricity is
8
96800
96500
+96500
16
3) 96500
32
3)
4
64
19. How many coulombs of electricity are required for the reduction of 1 mol of Mno, to Mn?+ ?
1) 96500 C
2) 1.93 x 105 C 3) 4.83 x 105 C 4) 9.65 x 106 C
20. Electric charge on Igm ion of N- is
0 10-19
2) 10 X 1.6 x 10-19 C
3) 1.6 x 10-19
C
4
) 2.89 x 10 C​

Answer 1

Sorry cant understand ur question