A gas will approach ideal behaviour at:A.Low temperature and low pressureB.Low temperature and high pressure C.High temperature and low pressureD.High temperature and high pressure

A gas will approach ideal behavior at:

C. High temperature and low pressure

In the ideal gas law, PV = nRT, where P is the pressure, V is the volume, n is the number of moles of the gas, R is the ideal gas constant, and T is the absolute temperature. When a gas behaves ideally, it follows this equation accurately.

For a gas to approach ideal behavior, the conditions should be such that the intermolecular forces between gas molecules are negligible compared to their kinetic energy. This happens at high temperatures and low pressures. At high temperatures, the gas molecules have enough kinetic energy to overcome any intermolecular forces, and at low pressures, the distance between gas molecules is large enough to reduce their interactions.

At low temperatures or high pressures, the gas molecules are closer together, and intermolecular forces become more significant, deviating the gas behavior from ideal. Therefore, for gases to approach ideal behavior, high temperature and low pressure conditions are preferred.