Why is k constant in Boyle's law?
Boyle's law was first formulated as an experimental gas law which described how the pressure of a gas decreased when the volume of said gas increased.
A more formal description of Boyle's law states that the pressure exerted by a mass of ideal gas is inversely proportional to the volume it occupies if temperature and amount of gas remain unchanged.
Mathematically, this can be written as
This is where a
This can be easily derived from the ideal gas law,