A carbon compound containing only carbon and oxygen has an approximate molecular weight of 290. On analysis it is found to contain 50% by weight of each element. What is the molecular formula of the compound ?

A carbon compound containing only carbon and oxygen has an approximate

1.	A carbon compound containing only carbon and oxygen has an approximate molecular weight of 290. On analysis it is found to contain 50% by weight of each element. What is the molecular formula of the compound ?
Answer» Solution :Calculation of empirical formula : `therefore` the empirical formula `=C_(4)O_(3)` Calculations of MOLECULAR formula: Molecular MASS = 290 (given) Empirical formula mass `=(4 xx 12.01 + (3 xx 16.0) = 96.04` `therefore N=("Molecular mass")/("Empirical formula mass") = 290/(96.04) = 3.019 =3` `therefore` The molecular formula of the given compound `= 3 xx C_(4)O_(3) = C_(12)O_(9)`