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>$𝑋 𝐸 = ∆𝑚𝑖𝑥 𝑋 − ∆𝑚𝑖𝑥 𝑋 𝑖𝑑𝑒𝑎𝑙$ (A)</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 (C)</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.