Question

A 5-ampere current is passed through a solution of zinc sulphate for $40$ minutes. The amount of zinc deposited at the cathode is:

• A. $0.4065g$
• B. $65.04g$
• C. $40.65g$
• D. $4.065g$

Answer 1

The correct option is D $4.065g$

$\because$ $W=z.i.t$=$\frac{E}{F}\times i.t$$=\left(\frac{65.38\times 5\times 40\times 60}{2\times 96500}\right)g$.

$=4.065g.$