Mole fraction of ethanol in an aqueous solution of ethanol and water is 0.1. The mass percent of ethanol is

Mole fraction of ethanol in an aqueous solution of ethanol and water i

1.	Mole fraction of ethanol in an aqueous solution of ethanol and water is 0.1. The mass percent of ethanol is
Answer» 10 90 22 78 Solution :Let MOLES of ethanol = x, then moles of water = 9x MASS of ethanol = 46X Mass of water = 162x `THEREFORE` mass % of ethanol = `(46x)/(208x)xx100=22%`