CHEM 120 Lecture Notes - Lecture 2: Ideal Gas, Gas Laws

• School: McGill University
• Department: Chemistry
• Course: CHEM 120
• Professor: Bradley Siwick

Document Summary

Chem 120 lecture 2 gases continued. Simple gas laws are relationships between pairs of gas properties (p, v, t, n) An ideal gas is a gas that obeys the simple gas laws perfectly. Real gases can behave like an ideal gas over a range of conditions. For a fixed amount of an ideal gas at a fixed temperature, the volume is inversely proportional to the pressure. Gas expands when heated at a constant pressure. The volume of any sample of an ideal gas tends toward zero at the same temperature. 273. 15 celsius: the volume of a fixed amount of an ideal gas at constant pressure is proportional to its absolute temperature. Equal volumes of any ideal gas contains same number of molecules when at the same temperature and pressure. Equal numbers of molecules occupy equal volumes. Avogadro: 1 mole (6. 02x1023) of molecules of any ideal gas occupy the same volume at.