Yes, there are several examples of solutions where both the solute and the solvent are gases. These are known as gas-gas solutions. Here are a few examples:
- Air: Air is a common example of a gas-gas solution. In this case, nitrogen (N2) is the solvent, and oxygen (O2), carbon dioxide (CO2), and other trace gases are the solutes.
- Natural Gas: Natural gas is another example where methane (CH4) acts as the solvent, and ethane (C2H6), propane (C3H8), and other hydrocarbons are the solutes.
- Helium-Oxygen Mixture: Used in deep-sea diving, this mixture has helium (He) as the solvent and oxygen (O2) as the solute.
- Hydrogen-Nitrogen Mixture: In this mixture, nitrogen (N2) is the solvent, and hydrogen (H2) is the solute. This mixture is often used in various industrial applications.
These examples illustrate how gases can mix uniformly to form solutions, just like liquids and solids can.