Single Choice

If Raoult's law is obeyed, then vapour pressure of the solvent in a solution is directly proportional to:

Amole fraction of the solvent
Correct Answer
Bmole fraction of the solute
Cmole fraction of the solvent and solute
Dthe volume of the solution

Solution

According to Raoult's law; the partial vapour pressure of each component of an ideal mixture of liquids is equal to the vapour pressure of the pure component multiplied by its mole fraction in the mixture.

For solvent:

$$P=P_{A}^{o}X_A$$ ; $$A\rightarrow$$ solvent

$$P \ \propto \ X_A$$

Hence, the correct option is $$A$$.


SIMILAR QUESTIONS

Solutions

The weight of an empty china dish is 39 g and when a saturated solution of potassium nitrate is poured into, its weight is 108 g at $$50^{\circ}C$$. After evaporating the solution to dryness, if the weight of the dish along with the crystals is 72 g then the solubility of potassium nitrate at $$50^{\circ} C$$ is .....................

Solutions

For a dilute solution, Raoult's law states that:

Solutions

Which one of the following is incorrect for ideal solution?

Solutions

The mixture which shows positive deviation from Raoult’s law is

Solutions

For a dilute solution, Raoult's law states that:

Solutions

Which of the following is satisfied by an ideal solution?

Solutions

What are the similarities between Raoult's Law and Henry's Law

Solutions

State the following : Raoult's law in its general form in reference to solutions .

Solutions

State Raoult's law for the solution containing volatile components. Write two differences between an ideal solution and a non-ideal solution.

Solutions

The relative lowering of the vapour pressure is equal to the ratio between the number:

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