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Freeze-dried foods have been dehydrated in a vacuum.

College Physics | 1st Edition | ISBN: 9781938168000 | Authors: Paul Peter Urone, Roger Hinrichs ISBN: 9781938168000 42

Solution for problem 14CQ Chapter 14

College Physics | 1st Edition

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College Physics | 1st Edition | ISBN: 9781938168000 | Authors: Paul Peter Urone, Roger Hinrichs

College Physics | 1st Edition

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Problem 14CQ

Problem 14CQ

Freeze-dried foods have been dehydrated in a vacuum. During the process, the food freezes and must be heated to facilitate dehydration. Explain both how the vacuum speeds up dehydration and why the food freezes as a result.

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Solution 14CQ

        In the drying process of food, the pressure is controlled by using partial vacuum. The vacuum increases the sublimation. It makes a drying process convenient.

        Moreover, water vapor solidify on the surface of the cold condenser chamber, therefore as a result, food freezes.

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Chapter 14, Problem 14CQ is Solved
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Textbook: College Physics
Edition: 1
Author: Paul Peter Urone, Roger Hinrichs
ISBN: 9781938168000

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Freeze-dried foods have been dehydrated in a vacuum.