Chapter 13.2, Problem 33SSC

Interpretation Introduction

Interpretation:

The conditions when real gas behaves as ideal gas needs to be explained.

Concept introduction:

This is based on kinetic molecular theory of gases.

Answer to Problem 33SSC

Real gas behaves as ideal gas at high temperature and low pressure.

Explanation of Solution

According to kinetic molecular theory, a gas which is ideal follows:

• Volume occupied by a molecule should be negligible as compared to total volume of gas.
• There should be no attractive forces between the gas molecules.

So, a real gas can behave ideally if above postulates are followed and these can be followed if temperature is high and pressure is low. These conditions will help the gas particles to remain at larger distance with no attractions.

Conclusion

High temperature and low pressure are necessary to behave a real gas ideally.