Raoult’s Law and Ideal Solutions Quiz

According to Raoult’s law, the relative lowering of the vapour pressure of the solvent is equal to what?

Temperature of the solution
Mole fraction of the non-volatile solute (correct)
Color of the solute particles
Volume of the solvent

What type of solutions are those that obey Raoult’s law over the entire range of concentrations?

Ideal solutions (correct)
Concentrated solutions
Saturated solutions
Dilute solutions

In an ideal solution, what types of deviations from Raoult’s law can occur?

Positive deviations and negative deviations (correct)
Extreme deviations and moderate deviations
Constant deviations and varying deviations
Neutral deviations and opposite deviations

What is the expression used to represent Raoult’s law?

$P_{total} = p_{1}^{0}x_{1} + p_{2}^{0}x_{2}$ (C) Signup and view all the answers

Which factor determines the lowering of the vapour pressure of the solvent according to Raoult’s law?

Mole fraction of the non-volatile solute (D) Signup and view all the answers

Match the following terms with their definitions:

Raoult's Law = The law stating that the relative lowering of the vapour pressure of the solvent in a solution is equal to the mole fraction of a non-volatile solute Ideal Solutions = Solutions that obey Raoult's law over the entire range of concentrations Positive deviations = Types of deviations from Raoult's law where the actual vapour pressure is higher than predicted by Raoult's law Negative deviations = Types of deviations from Raoult's law where the actual vapour pressure is lower than predicted by Raoult's law Signup and view all the answers

Match the following concepts with their descriptions:

Vapour pressure lowering in a solution = Ruled by Raoult's Law which relates it to the mole fraction of a non-volatile solute Ptotal= p10x1+p20x2 = Expression used to represent Raoult's Law in terms of partial pressures and mole fractions Ideal solution characteristics = Solutions that follow Raoult's Law throughout all concentrations Deviation types = Categories including positive and negative deviations from Raoult's Law Signup and view all the answers

Match the following types of deviations from Raoult’s law with their descriptions:

Positive deviations = When the observed vapour pressure is higher than predicted by Raoult’s law Negative deviations = When the observed vapour pressure is lower than predicted by Raoult’s law Ideal Solutions = Solutions that obey Raoult’s law over the entire range of concentrations Raoult’s Law = States that the relative lowering of the vapour pressure of the solvent over a solution is equal to the mole fraction of a non-volatile solute present in the solution Signup and view all the answers

Match the following terms with their definitions:

Ptotal= p10x1+p20x2 = Expression used to represent Raoult’s Law Vapour Pressure = The pressure exerted by a vapour in thermodynamic equilibrium with its condensed phases at a given temperature in a closed system Mole Fraction = The ratio of the number of moles of a component in a mixture to the total number of moles in the mixture Solvent = The substance that dissolves the solute to form a solution Signup and view all the answers

Match the following terms with their roles in solutions:

Non-volatile solute = Does not easily evaporate at normal temperatures Ideal Solutions = Obey Raoult’s law over the entire range of concentrations Solvent = The component present in larger quantity in a solution Mole Fraction = Represents the ratio of moles of one component to the total moles in a solution Signup and view all the answers

Match the following definitions with their corresponding concepts:

Raoult’s Law = States that the relative lowering of vapour pressure is proportional to the mole fraction of solute present Vapour Pressure = Pressure exerted by a vapour in equilibrium with its condensed phases at a specific temperature Mole Fraction = Ratio of moles of a component to total moles in a mixture Positive Deviations = When observed vapour pressure is higher than predicted by Raoult’s Law Signup and view all the answers

Match the following terms related to solutions with their meanings:

Raoult’s Law = Relates lowered vapour pressure to solute concentration in solution Ideal Solutions = Solutions that perfectly follow Raoult’s Law at all concentrations Negative Deviations = Occurs when observed vapour pressure is less than expected by Raoult’s Law Mole Fraction = Expresses component concentration relative to total moles in a solution Signup and view all the answers