The density of CCl4 vapour at 0ºC and 76 cm Hg in g/litre is:

where n= Rearranging the equation, we have PM= Mass (w) where d, density= (V) PV nRT n w V RT P M w V RT PM w RT V PM dRT Volume >> >> Molar Mass, M of 4 154 CCl gm Temperature, T=0 273 oC K Pressure, P=76cm Hg=1 atm 1 154 0.0821 273 d >> 6.88 / g L Gaseous State 7