| \[C{{u}^{2+}}(aq)+{{e}^{-}}\xrightarrow{{}}C{{u}^{+}}(aq)\] |
| and \[C{{u}^{+}}(aq)+{{e}^{-}}\xrightarrow{{}}Cu(s)\] |
A) 0.150V
B) 0.325V
C) 0.500V
D) 0.650V
Correct Answer: B
Solution :
\[Cu_{aq}^{2+}+e\xrightarrow{{}}Cu_{aq}^{+};\]\[\Delta G_{1}^{o}=-[1\times 0.15\times F]\] \[Cu_{aq}^{+}+e\xrightarrow{{}}Cu;\] \[\Delta G_{2}^{O}=-[1\times 0.50\times f]\] On adding \[\therefore \]\[Cu_{aq}^{2+}+2e\xrightarrow{{}}Cu;\] \[\Delta G_{3}^{o}=-[2\times E_{3}^{o}\times F]\] \[\therefore \]\[2E_{1}^{o}=0.65\,V\]or \[E_{3}^{o}=0.325\,V\]
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