Fundamentals of Chemical Engineering Thermodynamics (MindTap Course List)
Fundamentals of Chemical Engineering Thermodynamics (MindTap Course List)
1st Edition
ISBN: 9781111580704
Author: Kevin D. Dahm, Donald P. Visco
Publisher: Cengage Learning
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Chapter 10.6, Problem 6E

A)

Interpretation Introduction

Interpretation:

To explain whether the given mixture will show no deviation or positive deviation or negative deviation from Raoult’s Law.

Concept introduction:

Raoult’s law expresses that the incomplete vapor pressure of every segment of a perfect blend of fluids is equivalent to the mixture of vapor pressure of the pure component and the mole portion in the blend.

B)

Interpretation Introduction

Interpretation:

To explain whether the given mixture will show no deviation or positive deviation or negative deviation from Raoult’s Law.

Concept introduction:

Raoult’s law expresses that the incomplete vapor pressure of every segment of a perfect blend of fluids is equivalent to the mixture of vapor pressure of the pure component and the mole portion in the blend.

Negative deviation

When the adhesive forces between particles of different type are stronger than the cohesive forces between disparate atoms, the vapor pressure is less than the expected from the Raoult’s law. This is known as negative deviation.

C)

Interpretation Introduction

Interpretation:

To explain whether the given mixture will show no deviation or positive deviation or negative deviation from Raoult’s Law.

Concept introduction:

Raoult’s law expresses that the incomplete vapor pressure of every segment of a perfect blend of fluids is equivalent to the mixture of vapor pressure of the pure component and the mole portion in the blend.

Positive deviation

When the cohesive force between particles of same type is greater than the adhesive forces between atoms of different type, the extremity of dissimilarities leads both segments to escape the arrangement more effortlessly. In such case, the vapor pressure expected is more than that from the Raoult's law. This is called positive deviation.

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Fundamentals of Chemical Engineering Thermodynamics (MindTap Course List)

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