Relative lowering of vapor pressure of a dilute solution is 0.5. What is the mole fraction of the non-volatile solute?

Question

Relative lowering of vapor pressure of a dilute solution is 0.5. What is the mole fraction of the non-volatile solute? (A) 0.5 (B) 0.25 (C) 1 (D) 2

Tardigrade Admin · Accepted Answer

Relative lowering of vapour pressure of a non-volatile solute is expressed as: RLVP =(Δ p/p°)=xB=0.5 (given) where, chiB= mole fraction of the solute =0.5

Q. Relative lowering of vapor pressure of a dilute solution is $0.5$ . What is the mole fraction of the non-volatile solute?

0.5

0.25

1

2

Relative lowering of vapour pressure of a non-volatile solute is expressed as:
$R L V P = \frac{Δ p}{p ^{\circ}} = x_{B} = 0.5$ (given)
where, $χ_{B} =$ mole fraction of the solute $= 0.5$

Q. Relative lowering of vapor pressure of a dilute solution is 0.5. What is the mole fraction of the non-volatile solute?

0.5

0.25

1

2

Relative lowering of vapour pressure of a non-volatile solute is expressed as: RLVP=p∘Δp​=xB​=0.5 (given) where, χB​= mole fraction of the solute =0.5

Q. Relative lowering of vapor pressure of a dilute solution is $0.5$ . What is the mole fraction of the non-volatile solute?

Relative lowering of vapour pressure of a non-volatile solute is expressed as:
$R L V P = \frac{Δ p}{p ^{\circ}} = x_{B} = 0.5$ (given)
where, $χ_{B} =$ mole fraction of the solute $= 0.5$