Chapter 53, Problem 1TYK

What is the main global reservoir of nitrogen?

Summary Introduction

To review:

The main global reservoir of nitrogen $\left({\text{N}}_{\text{2}}\right)$.

Introduction:

Nitrogen is a gas that is naturally present in the atmosphere. It makes up 78% of the atmosphere, which is the highest among all the gases. It is also present in the combined form in amino acids in the plants and animals. Nitrogen occurs as ammonium $\left({\text{NH}}_4{}^{-}\right)$ and nitrate $\left({\text{NO}}_{\text{3}}{}^{-}\right)$ salts in the soil, and as nitrogen dioxide $\left({\text{NO}}_{\text{2}}\right)$ and nitrogen monoxide $\left(\text{NO}\right)$ in the atmosphere.

Explanation of Solution

The major reservoir of ${\text{N}}_{\text{2}}$ is the atmosphere. ${\text{N}}_{\text{2}}$ circulates between the atmosphere, lithosphere, and hydrosphere with the combined action of nitrogen-fixing bacteria, lightning, and industrial nitrogen. The combustion of oxygen takes place at a controlled rate in the presence of nitrogen.

Conclusion

Thus, the atmosphere is the main global reservoir of nitrogen $\left({\text{N}}_{\text{2}}\right)$.