Copper sulphate solution is electolysed using platinum electrodes A. current of 0.193 amperes is passed for 2hrs. How many grams of copper are deposited? (cu = 63.5, F = 96500 coulombs)
-
A.
0.457g -
B.
0.500g -
C.
0.882g -
D.
0.914g -
E.
1.00g
Correct Answer: Option A
Explanation
Time = 2hrs 120mm = 120 x 60secs
current = 0.193amps
Quantity of electricity = 120 x 0.193
= 60 x 23.16
96,500 deposits 63.5 gms of Cu
60 x 23.2 will deposit (frac{63.5 times 60 times 23.2}{96500})
= 0.457