Electrochemistry Question 8
Question 8 - 2024 (29 Jan Shift 2)
A constant current was passed through a solution of $AuCl _4^{-}$ion between gold electrodes. After a period of 10.0 minutes, the increase in mass of cathode was $1.314 g$. The total charge passed through the solution is _________ $\times 10^{-2} F$.
(Given atomic mass of $\overline{Au}=197$ )
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Answer (2)
Solution
$\frac{W}{E}=\frac{ch \arg e}{1 F}$
$\frac{1.314}{\frac{197}{3}}=\frac{Q}{1 F}$
$Q=2 \times 10^{-2} F$
