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 $K_{eb}$?

    <p>°C/m</p> 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?

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

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

    <p>A solution of glucose in water</p> Signup and view all the answers

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

    <p>It depends on the nature of the solvent</p> Signup and view all the answers

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

    <p>The presence of non-volatile solutes</p> Signup and view all the answers

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

    <p>A solution of ethanol in water</p> Signup and view all the answers

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

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

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