Ideal and Nonideal Solutions

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24 Questions

What is the characteristic of an ideal solution according to Raoult's Law?

It obeys Raoult's Law at all concentrations and temperatures

What happens to the volume of a solution when there is a positive deviation from Raoult's Law?

There is an increase in volume after mixing

Which of the following solutions exhibits a negative deviation from Raoult's Law?

Acetone + aniline

What is the relationship between the solubility of a gas and the pressure of the gas according to Henry's Law?

The solubility of a gas is directly proportional to the pressure of the gas

What is the characteristic of a solution that shows a positive deviation from Raoult's Law?

The intermolecular forces between the components are weaker than the forces between the like molecules

What happens to the heat of mixing when there is a positive deviation from Raoult's Law?

Heat is absorbed

Which of the following is an example of an ideal solution?

Benzene + toluene

What is the effect of a positive deviation from Raoult's Law on the boiling point of a solution?

The boiling point of the solution decreases

What is the relationship between the pressure and mole fraction of a gas according to Henry's Law?

P = KH X

What is the effect of adding a solute to a solvent on its boiling point?

The boiling point increases

What is the equation for the elevation in boiling point of a solution containing a nonelectrolyte?

∆Tb = Kb m

What is the effect of adding a solute to a solvent on its freezing point?

The freezing point decreases

What is the equation for the depression in freezing point of a solution containing a nonelectrolyte?

∆Tf = Kf m

What is the definition of the molal elevation constant?

The elevation in boiling point produced when one mole of solute is dissolved in 1Kg of solvent

What is the process of the spontaneous movement of pure solvent into a solution through a semipermeable membrane called?

Osmosis

What is the purpose of a semipermeable membrane in osmosis?

To allow only solvent molecules to pass through

What property is indicated by the decrease in vapour pressure when a nonvolatile solute is dissolved in a solvent?

Colligative Properties

Which of the following solutions will exhibit the highest elevation in boiling point?

1M Na2SO4

Which law is primarily concerned with the solubility of gases in liquids in response to pressure?

Henry's Law

What is the term for the behaviour where the observed vapour pressure of a solution is higher than expected?

Positive Deviation

Which property corresponds to the ratio of the number of moles of a component to the total number of moles in a solution?

Mole Fraction

What is the primary effect seen when boiling point elevation occurs?

Increase in boiling point

Raoult's Law is used to describe which of the following?

Vapour pressure of an ideal solution

In terms of colligative properties, which of the following is not true?

Depend on the nature of particles

This quiz compares and contrasts ideal and nonideal solutions, including their properties and behavior at different concentrations and temperatures.

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