Chapter 18, Problem 14A

Interpretation Introduction

Interpretation: This is to be explained that loss of electrons or an increase in oxidation state is oxidation.

Concept introduction: Redox reaction occurs between metals and non metals that involves transfer of electrons from metal to non metal.

Answer to Problem 14A

Oxidation is loss of electrons. Oxidation of sodium is as follows:

$\text{Na}\left(s\right)\to {\text{Na}}^{+}\left(aq\right)+e^{-}$

Explanation of Solution

Atom gains positive charge while it loses electrons. Oxidation state increase when atom loses electrons. Thus it is same when an atom increases its oxidation state and loss of electrons takes place by it. For example oxidation state of sodium increases from 0 to +1.

$\text{Na}\left(s\right)\to {\text{Na}}^{+}\left(aq\right)+e^{-}$

Conclusion

Oxidation − reduction reaction is as chemical reaction which associates transfer of electrons.