Question

emporical formula of a compound is CH2O & it's vapour density is 30.what is the molecular formula of the compound a) C3H6O3 b) C2H4O2c) C2H4O d) CH2O please answer my question as soon as possible it's urgent please....

Answer 1

molecular mass=2×emperical formula= 60...then answer is b as molecular mass = 60 and empirical formula=CH2O

Answer 2

Vapour density= Molecular mass/2

30*2= molecular mass

M.M= 60g
E.M=30g

M.F/E.F = M.M/E.M

M.F/CH2O = 60/30

M.F= 2( CH20)

M.F= C2H4O2

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