résznyomással

Résznyomással, meaning "partial pressure" in Hungarian, refers to the contribution of a single gas to the total pressure of a mixture of gases. In a gas mixture, each individual gas exerts its own pressure as if it were the only gas present. This concept is formally described by Dalton's Law of Partial Pressures, which states that the total pressure of a gas mixture is equal to the sum of the partial pressures of its constituent gases.

The partial pressure of a gas is directly proportional to its mole fraction in the mixture. If a gas makes up a larger fraction of the mixture, its partial pressure will be higher. This principle is fundamental in various scientific and engineering fields. For instance, in atmospheric science, the partial pressures of gases like oxygen and nitrogen determine breathing conditions at different altitudes. In chemical engineering, understanding partial pressures is crucial for designing reactors and separation processes. Physiological processes also rely on partial pressures, such as the exchange of gases in the lungs. The concept helps explain how gases move across membranes driven by pressure gradients.