Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
0 votes

The standard reduction potentials of $Cu^{2+}|Cu$ and $Cu^{2+}|Cu^+$ are 0.337V and 0.153V, respectively.The standard electrode potential of $Cu^+|Cu$ half cell is

$\begin{array}{1 1}0.184V\\0.827V\\0.521V\\0.490V\end{array} $

Can you answer this question?

1 Answer

0 votes
Answer : 0.521V
Since $\Delta G^{\large\circ}=-nFE^{\large\circ}$,we have
$Cu^{2+}+2e^-\rightarrow Cu$
$Cu^{2+}+e^-\rightarrow Cu^+$
$Cu^{+}+e^-\rightarrow Cu$
$\Delta G_1^{\large\circ}=-(2)(F)(0.337V)$
$\Delta G_2^{\large\circ}=-(1)(F)(0.153V)$
$\Delta G^{\large\circ}=\Delta G_1^{\large\circ}-\Delta G_2^{\large\circ}=-(4)F\{(2\times 0.337-0.153)V\}$
$E_{Cu^+|Cu}=2\times 0.337V-0.153V=0.521V$
answered Jul 22, 2014 by sreemathi.v

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App