The empirical formula of a non-electrolyte is CH₂O. A solution containing 3 g of the compound exerts the same osmotic pressure as that of 0.05 M glucose solution. The molecular formula of the compound is (KCET 2011)

For isotonic solution, 1 2 So, 1 2 1 2 w w M M Mass of 0.05 M glucose 0.05 180 9g x 6 12 6 Molecularmassof glucose C H O 180 1 1 3 9 M 60g M 180 >> molecular weight 60 n 2 empiricalformula weight 30 The molecular formula of the compound 2 2 4 2 2 CH O C H O