Question

100 ml of 0.05 M aqueous CuSO${}_4$ solution is subjected to electrolysis. Calculate the quantity of electricity required for the deposition of entire copper at the cathode.

• A. 0.005 F
• B. 0.01 F
• C. 0.1 F
• D. 0.05 F

Answer 1

The correct option is B 0.01 F

$\frac{W_{Cu}}{63.5}\times \frac{1000}{100}=0.05M$

$\Rightarrow W_{Cu}=\frac{0.05\times 63.5}{10}=0.3175g$

No. of equivalents $=\frac{0.3175}{31.75}=0.01$

$\therefore$ No. of faradays $=0.01F$