Practice question · Select all that apply
Which statements about entropy are correct?
Hints
- Three are the standard results; one over-extends the law.
- A refrigerator lowers the entropy of its cold interior perfectly legally.
Show the answer
- A. It is a state function
- B. The total for an isolated system never falls
- C. It is defined through the reversible heat divided by temperature
Why
Entropy is a state function defined by , and the total for an isolated system cannot fall. A part can lose entropy freely, a freezer does it continuously, provided the surroundings gain more.
Practise The Second Law and Entropy
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