Source: wikibot/fugacity
= Fugacity
{wiki=Fugacity}
Fugacity is a concept in thermodynamics and physical chemistry used to describe the "effective pressure" of a real gas. It accounts for deviations from ideal gas behavior, particularly under conditions of high pressure or low temperature, where interactions between gas molecules become significant. In essence, fugacity (\\( f \\)) represents how a gas behaves in a system relative to an ideal gas.