Chemistry: Azeotrope Composition and Fractional Distillation
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Questions and Answers

What is the effect of the van't Hoff factor on the relative lowering of vapor pressure of a solvent?

  • It is dependent on the concentration of the solution.
  • It decreases the relative lowering of vapor pressure.
  • It increases the relative lowering of vapor pressure. (correct)
  • It does not affect the relative lowering of vapor pressure.

What is the value of the van't Hoff factor for a strong electrolyte at high dilution?

  • It approaches 3.
  • It approaches 1.
  • It approaches 2. (correct)
  • It depends on the type of electrolyte.

What is the relationship between the van't Hoff factor and the degree of dissociation of a solute?

  • The van't Hoff factor is inversely proportional to the degree of dissociation.
  • The van't Hoff factor decreases with an increase in the degree of dissociation.
  • The van't Hoff factor is independent of the degree of dissociation.
  • The van't Hoff factor increases with an increase in the degree of dissociation. (correct)

What is the effect of the van't Hoff factor on the elevation of boiling point of a solution?

<p>It increases the elevation of boiling point. (A)</p> Signup and view all the answers

What is the relationship between the osmotic pressure of a solution and the van't Hoff factor?

<p>The osmotic pressure is directly proportional to the van't Hoff factor. (B)</p> Signup and view all the answers

What is the value of the van't Hoff factor for K2SO4 at high dilution?

<p>It approaches 3. (B)</p> Signup and view all the answers

What is the effect of the van't Hoff factor on the depression of freezing point of a solution?

<p>It increases the depression of freezing point. (C)</p> Signup and view all the answers

What is the relationship between the van't Hoff factor and the molal depression constant of a solvent?

<p>The van't Hoff factor is directly proportional to the molal depression constant. (A)</p> Signup and view all the answers

What is the percentage association of benzoic acid in a solution if it forms a dimer?

<p>60% (A)</p> Signup and view all the answers

What is the relationship between the van't Hoff factor and the concentration of a solution?

<p>The van't Hoff factor decreases with an increase in concentration. (B)</p> Signup and view all the answers

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