The mole fraction of a solvent in aqueous solution of a solute is The molality of the aqueous solution is :
Mole Fraction -
It is ratio of moles of solute or moles of solvent to moles of solution.
If a substance ‘A’ dissolves in substance ‘B’ and their number of moles are and respectively; then the mole fractions of A and B are given as
Mole fraction of A = (number of moles of A)/(number of moles of solution ) = /(+ )