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Given : $E^{\large\circ}(Cu^{2+}|Cu)=0.337V$ and $E^{\large\circ}(Sn^{2+}|Sn)=-0.136V$.Which of the following statements is correct?

$\begin{array}{1 1}Cu^{2+}\text{ ions can be reduced by }H_2(g)\\Cu\text{ can be oxidized by }H^+\\Sn^{2+}\text{ ions can be reduced by }H_2(g)\\Cu\text{ can reduce }Sn^{2+}\end{array} $

1 Answer

Answer : $Cu^{2+}$ ions can be reduced by $H_2(g)$
A positive potential implies that the given ion has a larger tendency to reduce as compared to $H^+$.Thus $cu^{2+}$ ion can be reduced by $H_2(g)$
answered Jul 21, 2014 by sreemathi.v

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