January 11-- marcus lu

MOLAR VOLUME OF A GAS AT STP!

STP stands for Standard Temperatures and Pressure.  At STP, 1 mole of gas is equal to 22.4 Litres, and is also

0 degrees Celsius, or 273.14K.

CONVERTING

We can convert with these 2 formulas ----  22.4L of gas            and                  1 Mole of Gas
                                                                ----------------                              ---------------------
                                                                  1 Mole of Gas                                    22.4L of gas


1)  Calculate the volume occupied by 5.2 grams of ammonia at STP.  (NH3)

First, convert the 5.2g of ammonia to MOLES.


5.2g ammonia X 1 mole / 17g = 0.3 Moles

Secondly,  convert the moles to litres !


0.3 moles X 22.4L / 1 Mole =  7 Litres