Question

Imperical formula of compound is Ch2o it's mol. Wt 90 Calculate the rf of the compound

Answer 1

Let's start by finding the empirical formula mass of this compound:

CH2OCH2O= C + (2)H + O = 12.0 + 2(1.0) + 16.0= 30 grams per mole

12030=412030=4
Since the molar mass of the compound is four times the empirical formula mass, the molecular formula is four times the empirical formula:

4(CH2O)=C4H8O24(CH2O)=C4H8O2