Chapter 9, Problem 63A

Interpretation Introduction

Interpretation:

The reactants from the given reaction need to be determined.

Concept introduction:

At the time of reaction reactants is a substrate which takes part in and undergoes change. Reactants are originally present in a chemical reaction.

Answer to Problem 63A

In the reaction potassium (K) and zinc nitrate $\left[\text{Zn}{\left({\text{NO}}_{\text{3}}\right)}_2\right]$ are reactants.

Explanation of Solution

Given that when potassium is dropped into aqueous zinc nitrate, zinc and potassium nitrate form. The reaction is as follows:

$\underset{\text{Reactants}}{2\text{K}\left(s\right)+\text{Zn}{\left({\text{NO}}_{\text{3}}\right)}_2\left(aq\right)}\to \underset{\text{Productds}}{\text{Zn}\left(s\right)+2{\text{KNO}}_{\text{3}}\left(aq\right)}$

In above reaction potassium (K) and zinc nitrate $\left[\text{Zn}{\left({\text{NO}}_{\text{3}}\right)}_2\right]$ are reactants. Potassium nitrate $\left({\text{KNO}}_{\text{3}}\right)$ and zinc (Zn) are products.

Conclusion

Reactants are placed left side of reaction and it is starting material. In the given reaction potassium (K) and zinc nitrate $\left[\text{Zn}{\left({\text{NO}}_{\text{3}}\right)}_2\right]$ are reactants. Potassium nitrate $\left({\text{KNO}}_{\text{3}}\right)$ and zinc (Zn) are products.