Chapter 23, Problem 17STP

Interpretation Introduction

Interpretation:

The element that is oxidized in the reaction needs to be determined.

Concept introduction:

Oxidation number portrays the strength of oxidation of a particular atom in a chemical compound. Oxidation number plays an important role in the nomenclature of a compound

Answer to Problem 17STP

A is the correct option.

Explanation of Solution

The given reaction is,

$\text{Zn}\text{+}{\text{HNO}}_{\text{3}}\to \text{Zn}{\left({\text{NO}}_{\text{3}}\right)}_{\text{2}}\text{+}{\text{H}}_{\text{2}}\text{O}$

The oxidation number of Zn is 0 in Zn and +2 in $\text{Zn}{\left({\text{NO}}_{\text{3}}\right)}_{\text{2}}$. So, one can say that Zn is oxidized.

Conclusion

Oxidation state of O, N, H does not change in the given reaction and ${\text{O}}_{\text{3}}$ is not a compound. It is an element. So, option B, C, D and E are incorrect.