An organic substance containing carbon, hydrogen and oxygen has the following percentage composition: C = 40.7, H = 5, and O = 54.3. 0.59 g of vapour of the compound occupies `112 cm^(3)` at STP. Find the molecular formula of the compound.

Explanation

(a) Calculate empirical formula (EF).
(b) Use mole concept to calculate molecular mass (MM) .
(C ) Calculate ` n = (EFM)/(MM)`
(d) Molecular formula = n(EF).
Answer : EF : `C_(5)H_(3)O_(2) , MF = C_(4)H_(6)O_(4)`