Q.Explain whether a gas approaches ideal behavior or deviates from ideal behaviour if

Step 1 (a). Compressing a gas to a smaller volume at constant temperature increases its density, forcing molecules closer together -- so both their own finite volume and their mutual attraction become more significant. The gas deviates more from ideal behaviour.

Step 2 (b). Raising the temperature at constant volume increases the average kinetic energy of the molecules, making intermolecular attraction comparatively less effective at influencing their motion. The gas approaches ideal behaviour more closely. …

For each scenario, work out whether it raises or lowers the effective density and/or the average kinetic energy, and apply the rule that ideal behaviour is favoured b …

• Assuming raising temperature always makes a gas deviate more (mixing this up with the effect of lowering temperature). …