Question

Molality of a given aq. solution is 2 mole fraction of
the solute is (Molar Mass Solute = 40)​

Answer 1

Answer:

Molality = moles of solute/kg solvent; Molar Mass H2O=40 g/kg = (0.8 x40)/1000 = 0.032 Molality = 0.2/0.032 = 6.25. Molality is known as molal concentration which is the measure of concentration of solute in solution with regards to amount of substance in specified quantity of mass of solvent.

Answer 2

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☆ Molality (m) is defined as the number of moles of solute per kilogram of solvent.

☆ Molarity is a measurement of the moles in the total volume of the solution, whereas molality is a measurement of the moles in relationship to the mass of the solvent.