Calculate the empirical andmolecular formula of the compound containing 80% Carbon, 20%Hydrogen. If the molecular mass of the compound is 30 then determinethe molecular formula.

Calculate the empirical andmolecular formula of the compound containin

1.	Calculate the empirical andmolecular formula of the compound containing 80% Carbon, 20%Hydrogen. If the molecular mass of the compound is 30 then determinethe molecular formula.
Answer» Solution :For `C rArr 80//12 = 6 . 6` For ` H rArr 20//1 = 20`now divide 6.6 and 20 by 6.6 to GET simple whole no. ratio of C and H which will come 1:3 so emperical FORMULAIS `CH_(3)`and its mass is 15 Nowto calculate N we have 30/15 = 2 somolecular formula is `CH_(3) xx 2 = C_(2) H_(6)`