Question

A mixture of three gases O2, N2 and CO2 is
​

Answer 1

Atmosphere(Nitrogen 78%

Oxygen 21%

Carbon dioxide 0.03 %)

atmosphere

Answer 2

A mixture of three gases $O2$, $N2$ and $CO2$ is in one phase

Explanation:

• If a system contains a mixture of nitrogen, oxygen, and carbon dioxide gas then there exists only one phase.
• As these gases form a homogeneous mixture.
• They have the same physical properties.
• Thus, the number of phases in the system is one.
• The system where the pressure is constant is termed a condensed system.
• Phase rule is shown by$F=C-P+1$ this is known as reduced phase rule or condensed phase rule.
• The phase diagram is drawn using temperature and composition along the two axes.