Question

During the electrolysis of copper sulphate solution with copper electrodes, how many coulombs of electricity should pass to oxidise half gram atom of copper to ${Cu}^{2+}$ ions?

• A. $48250$
• B. $96500$
• C. $193000$
• D. $95600$

Answer 1

Answer: (B)

$96500$

1 gram atom of copper will require 2 faraday of electricity to convert into $C{u}^{+}2$ ions.

$Cu\rightleftharpoons Cu\left(II\right)+2e$

Half gram atom of copper will require 1 faraday of electricity to convert to $C{u}^{2+}$ ions.

1 faraday = 96500 coulomb charge