Question

The weight of silver (at.wt. = 108) displaced by a quantity of electricity which displaces 5600 mL of $O_2$ at STP will be

• A. 5.4 g
• B. 10.8 g
• C. 54.0 g
• D. 108.0 g

Answer 1

The correct option is D 108.0 g

According to Faraday’s second law,
$\frac{W_{Ag}}{E_{Ag}}=W_{\frac{O_2}{E_{O_2}}}or\frac{W_{Ag}}{108}=\frac{\frac{5600}{22400}\times 32}{8}$
$Or\frac{W_{Ag}}{108}=\frac{8}{8}\Rightarrow W_{Ag}=108g$