View your list of saved words. (You can log in using Facebook.)
Laws that relate the pressure, volume, and temperature of a gas. Boyle's lawnamed for Robert Boylestates that, at constant temperature, the pressure P of a gas varies inversely with its volume V, or PV = k, where k is a constant. Charles's lawnamed for J.-A.-C. Charles (1746–1823)states that, at constant pressure, the volume V of a gas is directly proportional to its absolute (Kelvin) temperature T, or V/T = k. These two laws can be combined to form a single generalization of the behaviour of gases known as an equation of state, PV = nRT, where n is the number of gram-moles of a gas and R is called the universal gas constant. Though this law describes the behaviour of an ideal gas, it closely approximates the behaviour of real gases. See alsoJoseph Gay-Lussac.
This entry comes from Encyclopædia Britannica Concise. For the full entry on gas laws, visit Britannica.com.
Seen & Heard
What made you look up gas laws? Please tell us what you were reading, watching or discussing that led you here.