Question

The number of moles of a solute in its solution is 20 and total number of moles are 80 .The mole fraction of solute is

Answer 1

the mole fraction is x/x+y
so mole fraction for solute is equals to 20/20+80=.5mole fraction
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Answer 2

Answer: The mole fraction of solute is 0.25

Explanation:

Mole fraction is defined as the ratio of number of moles of solute to the total number of moles present in a solution. It is represented as $\chi$

Mathematically,

$\chi_{solute}=\frac{\text{Moles of solute}}{\text{Total number of moles}}$

We are given:

Moles of solute = 20

Total number of moles in a solution = 80

Putting values in above equation, we get:

$\chi_{solute}=\frac{20}{80}=0.25$

Hence, the mole fraction of solute is 0.25