Question

State and explain the limitations of Boyle’s Law ?

Answer 1

Boyle's law:

• Boyle's law, also known as Mariotte's law, describes the compression and expansion of a gas at constant temperature.
• This empirical relationship indicates that the pressure ($\mathrm{P}$) of a given quantity of gas changes inversely with its volume ($\mathrm{V}$) at constant temperature; in equation form, $\mathrm{PV}=\mathrm{k}$, where $\mathrm{k}$ is a constant.
• At sufficiently low pressures, real gases satisfy Boyle's law, albeit the product $\mathrm{PV}$typically falls significantly at higher pressures, where the gas begins to deviate from ideal behaviour.

Boyle's law has the following limitations:

1. Only applies to ideal gas.
2. When the temperature stays constant, this holds true.
3. This is true for the sample of perfect gas with constant mass (closed system only or no-mass interaction system).