Thermodynamic Properties of Solutions Quiz
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Questions and Answers

For an ideal solution, what is the relationship between Gibbs energy of mixing and the mole fractions of the components?

  • $∆𝑚𝑖𝑥 𝐺 = 𝑛𝑅𝑇(𝑥𝐴^3 + 𝑥𝐵^3 )$
  • $∆𝑚𝑖𝑥 𝐺 = 𝑛𝑅𝑇(𝑥𝐴 + 𝑥𝐵 )$
  • $∆𝑚𝑖𝑥 𝐺 = 𝑛𝑅𝑇(𝑥𝐴^2 + 𝑥𝐵^2 )$
  • $∆𝑚𝑖𝑥 𝐺 = 𝑛𝑅𝑇(𝑥𝐴 ln 𝑥𝐴 + 𝑥𝐵 ln 𝑥𝐵 )$ (correct)
  • What is the ideal volume of mixing for an ideal solution?

  • $∆𝑚𝑖𝑥 𝑉 = 0$ (correct)
  • $∆𝑚𝑖𝑥 𝑉 = 𝛿𝑝 𝑇$
  • $∆𝑚𝑖𝑥 𝑉 = 𝛿𝐺 𝛿𝑝$
  • $∆𝑚𝑖𝑥 𝑉 = 𝛿𝑝 𝑇 ∆𝑚𝑖𝑥 𝐺$
  • What is the condition for the excess entropy of mixing for regular solutions?

  • $𝑆 𝐸 = 𝑛𝑅(𝑥𝐴 + 𝑥𝐵 )$
  • $𝑆 𝐸 = 0$ (correct)
  • $𝑆 𝐸 = 𝑛𝑅(𝑥𝐴 ln 𝑥𝐴 + 𝑥𝐵 ln 𝑥𝐵 )$
  • $𝑆 𝐸 = −𝑛𝑅(𝑥𝐴 ln 𝑥𝐴 + 𝑥𝐵 ln 𝑥𝐵 )$
  • What is the relationship between excess functions and ideal solutions?

    <p>$𝑋 𝐸 = ∆𝑚𝑖𝑥 𝑋 − ∆𝑚𝑖𝑥 𝑋 𝑖𝑑𝑒𝑎𝑙$</p> Signup and view all the answers

    What is the measure of the energy of A-B interactions relative to A-A and B-B interactions in regular solutions?

    <p>𝜉 = dimensionless parameter</p> Signup and view all the answers

    Study Notes

    Module 3 Lecture 3B: The Properties of Solutions

    Lecture Objectives

    • Understand the variation of thermodynamic properties between an ideal solution and a regular solution
    • Determine the changes in boiling and freezing points of a solvent due to the addition of solute
    • Evaluate the osmotic pressure of a solution

    Liquid Mixtures Part 1

    • No key points mentioned

    Ideal Solutions

    • Calculations of thermodynamic properties of mixing are similar to those of perfect gases
    • In ideal solutions, the average energy of A-A and B-B interactions in the pure liquids are the same as the average energy of A-B interactions in the solution

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    Description

    Test your understanding of the thermodynamic properties of ideal and regular solutions with this quiz. Assess your knowledge of physical chemistry concepts related to solutions in this module 3 lecture 3B review.

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