Boyle's Law
| Formula / Notation | P₁V₁ = P₂V₂ (at constant T and n); PV = k |
|---|---|
| Also Known As | Boyle-Mariotte law, pressure-volume law, isothermal gas law |
What is Boyle's Law?
Boyle's Law states that at constant temperature, the pressure of a fixed amount of ideal gas is inversely proportional to its volume (P ∝ 1/V, or PV = constant). First published by Robert Boyle in 1662, it is one of the gas laws and applies well to real gases at low pressures and moderate temperatures. It forms part of the ideal gas law.
Formula & Notation
Other Names / Synonyms: Boyle-Mariotte law, pressure-volume law, isothermal gas law
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Boyle's Law states that at constant temperature, the pressure of a fixed amount of ideal gas is inversely proportional to its volume (P ∝ 1/V, or PV = constant). First published by Robert Boyle in 1662, it is one of the gas laws and applies well to real gases at low pressures and moderate temperatures. It forms part of the ideal gas law.
Boyle's law is applied in the design of gas syringes, respirators, hydraulic systems, and scuba diving equipment. It explains why submarine ballast tanks, bicycle pumps, and compressed gas cylinders behave as they do. It is foundational in gas-law calculations in analytical and industrial chemistry.
Containers holding compressed gases are subject to Boyle's law: if heated, pressure rises and can cause rupture. Compressed gas cylinders must be stored away from heat sources. Never heat a sealed container of gas. In diving, rapid ascent causes expanding lung gas (Boyle's law) and barotrauma.
The formula or notation for Boyle's Law is: P₁V₁ = P₂V₂ (at constant T and n); PV = k