Under which conditions do real gases deviate most from ideal gas behavior?

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

Answer: (B)

Verified step by step guidance

1. Recall that ideal gas behavior assumes no intermolecular forces and that gas particles occupy no volume.
2. Understand that real gases deviate from ideal behavior when these assumptions fail, which happens when particles are close together and interactions become significant.
3. At high pressure, gas particles are forced closer together, increasing the effect of their finite volume and intermolecular forces.
4. At low temperature, particles have less kinetic energy, so attractive forces between them become more noticeable.
5. Therefore, real gases deviate most from ideal behavior under conditions of high pressure and low temperature.