Question

What is the Ideal gas law?

Answer 1

The ideal gas law states that `PV=nRT`.

Explanation:

The ideal gas law gives the relationship between a substance's mass, volume, its current temperature, the amount of moles of the substance, and the pressure it is currently in, by a simple equation.

In my words, I would say that it says that:

The product of the pressure and volume of a substance is directly proportional to the product of number of moles and the temperature of the substance.

For the symbols:

`P` is the pressure (usually measured in `"kPa"`)

`V` is the volume (usually measured in `"L"`)

`n` is the amount of moles

`R` is the ideal gas constant (usually use `R=8.314* \ "L" \ "kPa" \ "mol"^-1 \ "K"^-1`)

`T` is the temperature (usually measured in `"K"`)

Note that no ideal gases are found to exist, but we can still use this equation for real-life gases, as they behave like ideal gas at low pressure and temperatures. But remember that, in real life, no gas will perfectly obey the ideal gas law.