Negative Temperature

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Chris Dis3L
Posts: 45
Joined: Fri Sep 28, 2018 12:25 am

Negative Temperature

Postby Chris Dis3L » Sun Feb 17, 2019 11:56 pm

Systems with a positive temperature will increase in entropy as one adds energy to the system, while systems with a negative temperature will decrease in entropy as one adds energy to the system. Do negative temperature systems violate the 2nd Law of Thermodynamics?

MadisonFuentes1G
Posts: 52
Joined: Fri Sep 29, 2017 7:04 am

Re: Negative Temperature

Postby MadisonFuentes1G » Mon Feb 18, 2019 12:16 am

I am also curious about this regarding temperatures with negative values.

JadeSebti1L
Posts: 35
Joined: Fri Sep 28, 2018 12:19 am

Re: Negative Temperature

Postby JadeSebti1L » Mon Feb 18, 2019 8:36 am

I am not sure there exists such a thing as a negative temperature system because basically all movement stops at 0 K.

Ibrahim Malik 1H
Posts: 65
Joined: Fri Sep 28, 2018 12:27 am
Been upvoted: 1 time

Re: Negative Temperature

Postby Ibrahim Malik 1H » Mon Feb 18, 2019 10:04 am

When you are thinking of negative temperatures, you are most likely referring to a negative Celsius. However, when we look at temperature we must convert to Kelvin, and there can never truly be a negative temperature when referring to the temperature in Kelvin as 0 degrees K is the lowest possible temperature. So although a problem may take place at -100 degrees C, in Kelvin this problem takes place at 173 degrees Kelvin.

Sara Flynn 2C
Posts: 60
Joined: Fri Sep 28, 2018 12:23 am

Re: Negative Temperature

Postby Sara Flynn 2C » Mon Feb 18, 2019 12:21 pm

since the temperature is in kelvin and there is no such thing as negative kelvin whether or not the second value is positive or negative is dependent upon the entropy of the system

Jonny Schindler 1A
Posts: 30
Joined: Fri Sep 28, 2018 12:20 am

Re: Negative Temperature

Postby Jonny Schindler 1A » Tue Feb 26, 2019 4:36 pm

A positive entropy will always make a reaction more favorable. The temperature can only change by how much.


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