Question

The empirical formula of a gaseous compound
is CH,. The density of the compound is 1.25
gm/lit. at S.T.P. The molecular formula of the
compound is
CH, 2) CH 3) CH.. 4)CH
48
the above one is hint​

Answer 1

Since, 1 lite contains 1.25 gms.

Hence 22.4 litres contain ( 1.25 × 22.4 ) gms = 28gms.

So molar mass = 28gms/mass

So compound = C2H4

CONFIRMATORY CHECK!!!

C = 12 x 2 = 24

H = 1 x 4 = 4

∴ 24 + 4 = 28g

Which is equal to molar mass

HENCE PROVED!!!!!

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-IRKI♥-