Question

[30 Points]

Answer 1

Explanation:

$Cu^{2+}+Zn\rightarrow Zn^{2+}+Cu$

I)  Oxidation reaction : When there is an increase in oxidation state number.

$Zn\rightarrow Zn^{2+}+2e^-$

Reduction reaction : when there is a decrease in oxidation state number.

$Cu^{2+}+2e^-\rightarrow Cu$

II) Zinc metal has gone under oxidation, as its oxidation state is changing from 0 to 2+. Zinc metal is getting converted into zinc ions.

III) Copper(II) ion has gone under reduction, as its oxidation state is changing from 2+ to 0. Copper ions are getting converted into copper metal.

IV) $Cu^{2+}$ is an oxidant.

Those chemical agents which get reduced itself and oxidize others is called  oxidizing agents.

V)$Zn$ is an reductant.

Those chemical agents which get oxidized itself and reduce others is called reducing agents.