 |
| Numerical 03 |
|
| 03. It is desired to deposit 0.254 kg of copper on the cathode of a copper voltameter. How long will it take to deposit this amount if a steady current of 100 A is maintained? Use the known value of Faraday's constant. Relative atomic mass of copper is 63. 5. |
| |
| Suggested solution: |
| |
| Mass of copper to be deposited = 0.254 kg |
| |
| Current, I = 100 A; F = 96500 C |
| |
| Relative atomic mass of Cu = 63.5; Time, t=? |
| |
 |
| Charge required, q = 8 F = 8 x 96500 C |
| |
 |
| |
| = 7720 s or 2.14h or 2h 8 min 24 s |
| |
 |
| |
| |
 |
| |
