Question

Ideal gas equation is also called equation of states because:

• A. it depends on states of matter
• B. it is relation between four variables and describes the state of any gas
• C. it is combination of various gas laws and any variable can be calculated
• D. none of these

Answer 1

The correct option is B it is relation between four variables and describes the state of any gas

Assuming an equilibrium state, the three properties needed to completely define the state of a system are pressure ($P$), volume ($V$), and temperature ($T$). Hence, the definition: An Equation of State (EOS) is a semi-empirical functional relationship between pressure, volume and temperature of a pure substance. Ideal gas equation is also called equation of states because it is relation between four variables and describes the state of any gas. Hence option $B$ is correct answer.