Question

Same amount of electric current is passed through the solutions of $AgNO_{3}$ and HCl. If $1.08$g of silver is obtained from $AgNO_{3}$ solution, the amount of hydrogen liberated at STP will be

• A. $1.008g$
• B. $11.2g$
• C. $0.01g$
• D. $1.1g$

Answer 1

Answer: (C)

$0.01g$

Answer 2

$\frac{W_{H_{2}}}{W_{Ag}} = \frac{E_{H_{2}}}{E_{Ag}}$ (from Faraday’s second law)

$W_{H_{2}} = \frac{1}{108} \times 1.08 = 0.01g$