How did the ideal Gas Law originate?

1 Answer
Nov 13, 2016

The “Ideal Gas Law” developed over time from the experiments and formulas derived by several separate chemists.

It was first stated by Émile Clapeyron in 1834 as a combination of the empirical Boyle's law, Charles' law and Avogadro's Law.


The simplest complete form is the combined law form, or Ideal Gas Law.
#((PV)/T)_1 = ((PV)/T)_2# is applicable in all situations.

It was derived by combining the relationships of each of the other general laws (Boyles Law (1627-1691), Charles' Law (1746-1823), Guy-Lussacs Law (1778-1850). The related Dalton’s Law (1766-1844) describes partial pressures.

The other primary one to remember is the relationship to moles: PV = nRT (Avogadro’s Law (1776-1856)). Here you need to be careful to use the correct “gas constant”, R, which has different values for different dimensions.