According to this law, “At constant temperature, the pressure of a fixed amount (i.e., number of moles n) of gas varies inversely with its volume”. This is known as Boyle’s law. Mathematically, it can be represented as :
P ∝ 1/V (at constant T and n)
Or, PV = k = constant
where, P = Pressure of gas
V = Volume of gas
k = Proportionality constant
The value of constant k depends upon the amount of the gas, temperature of the gas and the units in which P and V are expressed. Thus, the law can also be stated as product of volume and pressure for a given mass of gas at constant temperature is always constant. Graphically this law can be represented as:
