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Application of Electrolysis

How would you...

Question

How would you change $C u^{2 +}$ ion to $C u$ ?

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Solution

By supplying two electrons to $C u^{+ 2}$
$C u^{+ 2} + 2 e^{-} \to C u$

We can do so by reacting it with Silver Nitrate:
$C u + 2 + 2 A g N O_{3} \to C u (N O_{3})_{2} + 2 A g$

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