A charge of one coulomb liberates 0.0033g of copper in an electrolytic process. How long will it take a current of 2A to librate 1.98g of copper in such a process?
-
A.
5 mins -
B.
30 mins -
C.
50 mins -
D.
60 mins -
E.
120 mins
Correct Answer: Option A
Explanation
0.0033g = 1 coulomb
1.98gs = 1.98 x 1
= 600 cou.
Q = It
600 = 2 x t
t = 300sec = 5 mins