Question

Under what conditions does a real gas behave ideally?

• A. At high temperature and high pressure
• B. At low temperature and low pressure
• C. At low temperature and high pressure
• D. At high temperature and low pressure

Answer 1

The correct option is D At high temperature and low pressure

The attractive forces between the molecules are not considered while writing an ideal gas equation. At higher temperatures and low pressure, the gas expands. The molecules acquire more thermal energy and move far apart hence the attractive forces between them become negligible and the gas behaves ideally.