Ideal gas law
Ideal Gas Law
The Ideal Gas Law (pronounced: /aɪˈdiːəl gæs lɔː/) is a fundamental principle in the field of thermodynamics and physical chemistry. It describes how gases behave under varying conditions of pressure, volume, and temperature.
Etymology
The term "Ideal Gas Law" is derived from the concept of an "ideal gas," which is a theoretical gas composed of a large number of randomly moving, non-interacting point particles. The "law" part of the term refers to the mathematical relationship that this principle establishes.
Definition
The Ideal Gas Law is usually stated as: PV = nRT
Where:
- P stands for the pressure of the gas,
- V is the volume occupied by the gas,
- n is the number of moles of the gas,
- R is the ideal, or universal, gas constant, and
- T is the absolute temperature of the gas.
Related Terms
- Pressure: The force exerted by a gas per unit area.
- Volume: The amount of space that a substance or object occupies.
- Moles: A unit of measurement in chemistry that expresses amounts of a chemical substance.
- Gas Constant: A physical constant which is featured in many fundamental equations in the physical sciences.
- Absolute Temperature: A temperature measurement made relative to absolute zero, the lowest possible temperature.
Applications
The Ideal Gas Law is used in a wide range of scientific and engineering fields, including chemical engineering, meteorology, and material science. It provides a useful approximation for many gases under normal conditions of temperature and pressure.
Limitations
The Ideal Gas Law assumes that gases behave ideally, meaning they follow this law at all temperature and pressure ranges. However, real gases show deviations from this law at high pressures and low temperatures.
External links
- Medical encyclopedia article on Ideal gas law
- Wikipedia's article - Ideal gas law
This WikiMD dictionary article is a stub. You can help make it a full article.
Languages: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
Urdu,
বাংলা,
తెలుగు,
தமிழ்,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
European
español,
Deutsch,
français,
русский,
português do Brasil,
Italian,
polski