Quick Answer: The Boyle-Mariotte Law Apparatus is a gas-law set for showing that, at constant temperature, the pressure of a fixed mass of trapped air rises as its volume falls. Students change the volume step by step and read the pressure each time.
Last updated: October 2026
Key Features
Sealed chamber of trapped air with a graduated volume scale
Movable arrangement for changing the gas volume by hand
Pressure indication read at each volume
Valve for releasing pressure after the experiment
About This Product
Starting from a noted volume and pressure, students compress or expand the trapped air in steps and record the pressure after each change. The readings show pressure falling as volume rises, and a graph or the product of pressure and volume confirms the inverse relationship of Boyle-Mariotte’s law. Pressure is changed slowly and released gently at the end.
Frequently Asked Questions
What relationship does the Boyle-Mariotte Law Apparatus verify?
That the pressure of a fixed mass of gas is inversely proportional to its volume when the temperature stays constant.
