Question

Which of the following ions will not be reduced by Zinc?
i)Cu²+
ii)Fe²+
iii)Al³+
iv)Ag+

Answer 1

Answer:

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Explanation:

Among all given option only Na+ has less reduction potential than Zn so it can not be reduced by Zn.

Answer 2

(iii)$Al^{3+}$ ions will not be reduced by Zinc

Explanation:

1.As $Al^{3+}$  is more reactive than metallic zinc hence will not be reduced by metallic zinc.Reduction happens at the negative cathode because this is where positive ions gain electrons.

2.Reduction is the transfer of electrons between species in a chemical reaction where there is a process of gaining electrons or a decrease in the oxidation state by an element.

3.A reduction chemical reaction involves increasing electrons associated with a single atom or a group of atoms.