Explanation The working substance is the component in a refrigerator that absorbs heat inside the refrigerator by undergoing change of state and in the operational cycle, this substance will be again changed to the previous state by the removal of the absorbed heat using high pressure applied by a compressor. The refrigerant or the working substance should have the properties of changing state easily by the application of the pressure from the compressor. A gaseous refrigerant that is easily liquefiable is preferred for the proper and efficient working of a refrigerator. Conclusion: Since, the application of pressure can result the phase change of a gas, a refrigerant should be in the state of gas and with easily liquefiable nature. Thus, option (a) is correct. The gases that are hard to liquefy require more consumption of energy, it is having risks of exploding upon high pressure, and hence they cannot be used as working substance in refrigerators...

16th Edition

ISBN: 9780077862619

Author: KRAUSKOPF, Konrad B. (konrad Bates), Beiser, Arthur

Publisher: Mcgraw-hill Education,

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Chapter 5, Problem 27MC

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The state and nature of the working substance used in most refrigerators.

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The state and nature of the working substance used in most refrigerators.

Solution Summary: The author explains that a gas that is easy to liquefy is used as the working substance in most refrigerators.

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