Question

A sample of a wine contain 28% C2H5OH by volume and rest is H2O. Calculate mole fraction of
C2H5OH in wine, density of C2H5OH = 0.79 gm/ml, density of water = 1 gm/ml.

Answer 1

0.28 x 0.79 = 0.22 g.

0.22/46 = 0.004 .