Molar Volume of a Gas at STP.

               

-STP, otherwise known as Standard Tempereature and Pressure, is a standard conditon to compare volume of gases

-STP is equal to.. 1 atmosphere of pressure and with a temperature of 0°C or 273.15 K (Kelvins)

-at STP, 1 mole of gas occupies 22.4 L

THEREFORE, new conversion factors : P

22.4 L of gas                  OR                 1 mole of gas

1 mole of gas                                         22.4 L of gas

Basically, you can add these two new conversions to the mole conversions map from before. You can only use the two conversions between mole and gas.

Ex. A cylinder contains 15.85 moles of N₂ gas at STP. What is the volume of the gas?

15.85 moles x 22.4 L of gas     = 335.0 L of gas
                           1 mole