Question

The no. Of moles of a solute in its solution is 20 and total of moles are 80 .The mole fraction of solute is

Answer 1

mole fraction of solute would be 20 upon 80 that is 1 by 4 and equal to. 25

Answer 2

Answer: The mole fraction of solute is 0.25

Explanation:

Given : moles of solute = 20

moles of solution = 80

moles of solution = moles of solute + moles of solvent

80 = 20 + moles of solvent

moles of solvent = 60

Mole fraction of solute is the ratio of moles of solute to the total moles.

$\text{Mole fraction of solute}=\frac{\text{Moles of solute}}{\text{Moles of solute}+{\text{Moles of solvent}}}=\frac{20}{20+60}=0.25$