Question

If the mole fraction of a solute in a binary solution is 0.3, what could be the mole fraction of the solvent in the solution ?

Answer 1

Step 1:Mole fraction = $\frac{\mathrm{Number}\mathrm{of}\mathrm{moles}\mathrm{of}\mathrm{a}\mathrm{substance}}{\mathrm{Total}\mathrm{number}\mathrm{of}\mathrm{moles}\mathrm{of}\mathrm{all}\mathrm{substances}\mathrm{in}\mathrm{the}\mathrm{mixture}}$

Step 2: Sum of the mole fraction in a mixture = 1

Step 3:So, the mole fraction of solvent = 1- 0.3

= 0.7

Final Answer:
If the mole fraction of a solute in a binary solution is 0.3 the mole fraction of the solvent in the solution will be 0.7.