Electrochemistry - Result Question 20
####21. 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) $54.9 g$
(d) $108.0 g$
[2014]
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Solution:
- (d) $w _{O_2}=n _{O_2} \times 32$
$w _{O_2}=\frac{5600}{22400} \times 32=8 g=1$ equivalent of $O_2$
$=1$ equivalent of $Ag=108$