Question

In the reaction, $Cu\left(s\right)+2A{g}^{+}\left(aq\right)\to C{u}^{2+}+2Ag\left(s\right)$

• A. Cu(s) is oxidised to $C{u}^{2+}$
• B. Cu(s) reduced to $C{u}^{2+}\left(aq\right)$
• C. Ag (aq) is oxidised to Ag (s)
• D. Both Cu(s) and $A{g}^{+}$(aq) are oxidised.

Answer 1

The correct option is A Cu(s) is oxidised to $C{u}^{2+}$

$Cu\left(s\right)+2A{g}^{+}\left(aq\right)\to C{u}^{2+}+2Ag\left(s\right)$

In the reaction, $Cu\left(s\right)$ is oxidised to $C{u}^{2+}$ as oxidation number of $Cu$ increases from 0 to +2. The oxidation no. of $Ag$ is decreasing from +1 to 0, so it is being reduced.

Hence, the correct option is $\left(A\right)$.