Isothermal Transformation

The word isothermal refers to the same temperature. So one isothermal transformation of a gas occurs when the initial temperature is conserved.

The physical law that expresses this relationship is known as Boyle's Law and is mathematically expressed by:


p = pressure

V = volume

= constant that depends on the mass, temperature and nature of the gas.

Since this constant is the same for the same gas, when transformed, the relationship is valid:


Certain gas contained in a 1m³ container with piston exerts a pressure of 250Pa. When being isothermally compressed to a volume of 0.6m³ what will be the pressure exerted by the gas?