Concept:In a gas mixture, the component present in the largest amount is treated as the solvent.
Explanation:Air is a homogeneous mixture of gases.
The major component is nitrogen,
N2, which makes up about
78% of air.
The other gases, such as oxygen, carbon (IV) oxide, and inert gases, are present in smaller amounts.
Therefore, nitrogen acts as the solvent, while the remaining gases act as solutes.
Answer:C. nitrogen.