Question

A real gas most closely approaches the behaviour of an ideal gas at

• A. 15 atm and 200 K
• B. 1 atm and 273 K
• C. 0.5 atm and 500 K
• D. 15 atm and 500 K

Answer 1

The correct option is C

0.5 atm and 500 K

A real gas most closely approaches the behaviour of an ideal gas when the intermolecular distances are huge and the kinetic energy is high, i.e. at lower pressures and higher temperatures.