The empirical formula of a gaseous compound is CH2 .The density of the compound is 1.25 gm/lit.at S.T.P. The molecular formula of the compound is :
The correct option is A) C2H4
Since, 1 lite contains 1.25 gms.
Hence 22.4 litres contain(1.25×22.4)gms≡28gms.
So molar mass ≡28gms/mass= C2H4