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Violation of entropy?

by SarcasticSully
Tags: entropy, violation
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Mar30-14, 08:36 PM
P: 13
Ok so entropy cannot be destroyed, right? So let's say you have a reaction that decreases entropy (s<0) but it also is exothermic (h<0) and that overpowers the entropy decrease so it is spontaneous (ie h-ts=g<0). If that happens, where does the entropy go?
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Simon Bridge
Mar30-14, 09:20 PM
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If that is a closed system, then you have just described a net increase in entropy.
Possibly it is the imprecise use of words that is confusing you - or you are pulling my leg.
Redo the description, and describe it more carefully.
Mar30-14, 09:40 PM
P: 22,313
"destroyed" is an odd term to use here: entropy is energy. It doesn't get destroyed, it gets counted. And I don't think it is possible for a negative entropy reaction to be exothermic. Do you have any examples?

Mar31-14, 02:30 AM
Borek's Avatar
P: 23,719
Violation of entropy?

If I put glass of water into the fridge it will "spontaneously" freeze. This process is both exothermic and has a decreasing entropy. But it so blatantly obvious where the entropy "goes" I am not even going to mention it.

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