In each part, predict which gas sample is likely to follow the ideal gas law more closely:

(a) SO₂ gas at 0 °C or SO₂ at 100 °C, both at 1 atm

(b) N₂ gas at 1 atm or N₂ at 100 atm, both at 25 °C

(c) O₂ gas or NH₃ gas, both at -20 °C and 1 atm

Strategy

In each case, choose the gas that is farther away from its condensation point or at higher temperature; gases follow the ideal gas law at high temperatures and low pressures.