Charles Law: The volume of a given mass of a gas changes when its temperature is changed. Since the volume of a gas also changes with pressure, the volume-temperature relationship for a gas is studied at a constant pressure. During the experiment, the temperature is changed by dipping the syringe in a beaker containing water which can be cooled (by adding ice) or heated and the pressure is maintained constant by not changing the pressure applied on the piston, that is, without disturbing the piston externally. It has been observed that the volume of the enclosed gas or air increases … Continue reading Charles Law (Volume-Temperature Relationship for a Gas)