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Raoult's Law and Ideal Solutions Quiz

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Questions and Answers

What happens to the vapor pressure of a solution when a non-volatile solute is added?

The vapor pressure decreases (correct)

The vapor pressure increases

The vapor pressure remains unchanged

The vapor pressure initially increases and then decreases

Which of the following statements about the boiling point of a solution is true?

The boiling point of a solution depends on the concentration of the solute

The boiling point of a solution is lower than that of the pure solvent

The boiling point of a solution is higher than that of the pure solvent (correct)

The boiling point of a solution is the same as that of the pure solvent

What is the relationship between the freezing point of a solution and the concentration of the solute?

The freezing point is independent of the concentration of the solute

The relationship between freezing point and solute concentration is not well-defined

The freezing point increases as the concentration of the solute increases

The freezing point decreases as the concentration of the solute increases (correct)

What is the unit of the ebullioscopic constant $K_{eb}$?

°C/m Signup and view all the answers

According to Raoult's law, what is the relationship between the vapor pressure of a solution and the vapor pressures of the pure components?

The vapor pressure of the solution is the sum of the vapor pressures of the pure components Signup and view all the answers

Which of the following solutions would have the highest boiling point elevation?

A solution of glucose in water Signup and view all the answers

Which of the following statements about the ebullioscopic constant is true?

It depends on the nature of the solvent Signup and view all the answers

What is the cause of freezing point depression and boiling point elevation in solutions?

The presence of non-volatile solutes Signup and view all the answers

Which of the following solutions would have the lowest freezing point depression?

A solution of ethanol in water Signup and view all the answers

What is the relationship between the boiling point elevation and the molality of the solute?

The boiling point elevation is directly proportional to the molality of the solute Signup and view all the answers