Question

if the mole fraction of sugar in aqueous solution is 0.2, then the molality of sugar in the solution will be a) 55.55m b) 13.9m c) 6.5m d) 4.5m​

Answer 1

Answer:

I don't know if you have any questions please ask me help

Answer 2

Answer:

a) 55.55m

Explanation:

Given:

Mole fraction of glucose= 0.2

Molefraction of solution = 1

So, mole fraction of water= 1-0.2

= 0.8

Molality = moles of solute/ kg solvent

Molar mass H2O = 18 g/kg

Mass of H2O = (0.8×18)/1000

=0.014 kg

Molality = 0.2 / 0.014

= 55.55m