Question

The mole fraction in water is 0.3.caculate A.the molality of the solution
B.the mass percent of ethanol

Answer 1

Answer:

The molality of the solution is 23.81 m

Explanation:

0.3 moles of Ethanol are present in 0.7 ( 1.0 —0.3 ) moles of water

∵ 0.3 moles of Ethanol in 0.7 x 18 g or 0.0007 x 18 Kg of water .

Molality of Ethanol = (0.3 / 0.007) x 18

                                  = 23.81 m