Mole fraction

 Mole fraction 

Mole fraction of a constituent (solute as well as solvent) is the fraction obtained by dividing number of moles of that constituent by the total number of moles of all the constituents present in the solution. 

=> It is denoted by "x".

Formulas 

Mole fraction of solvent in the solution 

       x1 = n1 /n1+ n2

Mole fraction of solute in the solution 

      x2 = n2 / n1 + n2

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