Chapter U5, Problem 14RE

Interpretation Introduction

Interpretation: The atoms that are oxidized and atoms that are reduced in a redox reaction needs to be explained.

Concept introduction: A loss of electrons is termed as oxidation, and gain of electrons is termed as reduction.

Answer to Problem 14RE

In a chemical reaction loss of electrons is termed as oxidation, and the gain of electrons is termed as reduction.

Explanation of Solution

In a redox reaction, an atom or ion gain electrons and another atom or ion lose electrons. A loss of electrons is termed as oxidation, and a gain of electrons is termed as reduction. For example, a chemical equation is as follows:

  $\text{Zn}\left(s\right)+2{\text{Mn}}^{\text{4+}}\left(aq\right)\to {\text{Zn}}^{\text{2+}}\left(aq\right)+2{\text{Mn}}^{\text{3+}}\left(aq\right)$

In the above equation, Zn oxidizes and form ${\text{Zn}}^{\text{2+}}$ and ${\text{Mn}}^{\text{4+}}$ reduces and forms ${\text{Mn}}^{\text{3+}}$ .

Conclusion

In a chemical reaction, reduction and oxidation always takes place together. This process is termed as an oxidation-reduction reaction or redox reaction.