second law of thermodynamics


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TarynLane2J
Posts: 30
Joined: Sat Jul 22, 2017 3:00 am

second law of thermodynamics

Postby TarynLane2J » Sun Feb 04, 2018 2:04 pm

Why is it that as an object approaches absolute zero, the change in entropy approaches zero but entropy itself is only zero when it is a perfect crystal?

Jakob von Morgenland 2C
Posts: 31
Joined: Sat Jul 22, 2017 3:00 am
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Re: second law of thermodynamics

Postby Jakob von Morgenland 2C » Sun Feb 04, 2018 2:10 pm

In a perfect crystal, there are no imperfections, and in other words, a perfect crystal has no disorder (so the entropy will equal 0).All other objects have some sort of imperfection and disorder, so the entropy only theoretically approaches 0.

Isaiah Little 1A 14B
Posts: 50
Joined: Fri Sep 29, 2017 7:05 am

Re: second law of thermodynamics

Postby Isaiah Little 1A 14B » Sun Feb 04, 2018 2:15 pm

Think of 0 K as a theoretical limit, where entropy is a function of the temperature in Kelvin. As T approaches 0 K, so would entropy; but since we cannot achieve 0 K, we can only approach zero entropy.


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