# Why is 22.4 liters called the molar volume of a gas?

##### 1 Answer

May 25, 2014

The Molar Volume of an ideal gas at STP, which we define to be

To calculate this we can use the Ideal gas law of

At STP (Standard Temperature and Pressure), we CHOSE:

#V = (nRT)/P#

#= (1 cancel("mol")) (0.082057 (cancel("atm")cdot"L")/(cancel("mol")cdotcancel("K")))(273.15cancel("K"))/(1 cancel("atm"))#

#=# #"22.411 L"#

This is the volume of one mole of ideal gas at STP, in 1982 or before...