Question

How much charge is required to produce hydrogen gas at the rate of 1 $\text{mL/s}$ by the electrolysis of molten $NaCl$?

• A. 8.6 C
• B. 18.4 C
• C. 4.3 C
• D. 1.4 C

Answer 1

The correct option is A 8.6 C

$1\text{Equivalent}=11200\text{ml}{H}_2{\text{mol}}^{-1}\equiv 1{\text{F mol}}^{-1}\equiv 96500{\text{C mol}}^{-1}$
$Q=nF$
Where, n = number of moles
$Q=\frac{1\text{ml}}{11200{\text{ml mol}}^{-1}}\times 96500{\text{C mol}}^{-1}=8.6\text{C}$