Boyle’s law

Boyle’s law:

Boyle’s law states that the volume V of a fixed mass of gas is inversely proportional to its absolute pressure p at constant temperature

i.e. p ∝ 1/V

or p = k/V

or pV = k at constant temperature, where

 p = absolute pressure in pascals (Pa),

V = volume in m3, and k = a constant.

Changes that occur at constant temperature are called isothermal changes. When a fixed mass of gas at constant temperature changes from pressure p1 and vol-

ume V1 to pressure p2 and volume V1 then:

p1V1= p2V2.