Question

the density of Cu is 8. 94 g cm-3. the quality of electricity needed to plate an area 10cm X 10cm to a thicked of 10-2 cm using CuSo4 solutions would be
1. 13586C
2. 27172C
3. 40789C
4. 20348C

Please answer this question is important for IIT level 2 chemistry ​

Answer 1

Explanation:

sew this is very simple

Mass of copper deposited =density×volume=8.94×1=8.94 gm.

So according to faraday's law:

W=ZQ=

96500

E

×Q

⟹8.94=

2×96500

63.5×Q

So, Q=27172 Coulomb.

Option B is correct.