Question

Who discovered the ideal gas law?

Answer 1

The ideal gas law is the combination of all the gas laws i.e. Boyle’s law, Avogadro’s law, and Charles’s law, that we studied in our previous classes. The law was discovered by Emile clapeyron. The ideal gas law is a useful approximation for calculating temperatures, volumes, pressures or amount of substance for many gases over a wide range of values.

Complete answer:
The Ideal Gas Law is simply the combination of all Simple Gas Laws (Boyle's Law, Charles' Law, and Avogadro's Law). The ideal gas law, also called the general gas equation, is the equation of the state of a hypothetical ideal gas
The ideal gas law was discovered by EMILE CLAPEYRON. His full name was BENOÎT PAUL ÉMILE CLAPEYRON. He is known as one of the founders of thermodynamics. He combined the work of Boyle, Mariotte, Charles, and Gay-Lussac into an equation of the state of a perfect (i.e., ideal) gas.
The law describes how equal volumes of two gases contain an equal number of molecules with the same temperature and pressure. The equation for the ideal gas law is:
$PV = nRT$where $P$ is pressure, $V$is volume, $T$is temperature, $n$is the amount of the substance and $R$ is the ideal gas constant.

Note:
In reality, the ideal gas does not exist. It is a hypothetical gas composed of a set of randomly moving point particles that interact only through elastic collisions. Although there is no ideal gas, all real gas tends to approach that property when the density is low enough. This is possible because the molecules of the gas are so far apart from one another that they do not interact with each other.