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5/30 MCQs for:

Raoult’s Law And Phase Equilibria

Which of the following aqueous solutions should have the highest boiling point?

1.0 M Na2SO4.

1.0 M NaOH.

1.0 M NH4NO3.

1.0 M KNO3.

For a mixture that shows positive deviation from Raoult’s law.

There should be no change in the boiling point of the mixture.

The components should b miscible in all proportions.

The intermolecular forces in the pure component are weaker than in the mixture.

The mixture has a lower boiling point than the components.

Colligative properties depend on :

The physical properties of the solute particles dissolved in solution.

The number of solute particles in solution.

The nature of the solute particles dissolved in solution.

The nature of solvent particles.

On the basis of information given below mark the correct option. On adding acetone to methanol some of the hydrogen bonds between methanol molecules break.

Specific composition methanol¬-acetone mixture forms maximum boiling azeotrope and will show positive deviation from Raoult’s law.

At specific composition methanol¬-acetone mixture will form minimum boiling azeotrope and will show positive deviation from Raoult’s law.

At specific composition methanol¬-acetone mixture will form minimum boiling azeotrope and will show negative deviation from Raoult’s law.

At specific composition methanol¬-acetone mixture will form maximum boiling azeotrope and will show negative deviation from Raoult’s law.

A homogeneous and physically distinct part of a system is known as:

A mixture.

An ideal mixture.

A phase.

Immiscible liquids.