S = q/T

Volume:
Temperature:

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Gabriella Bates 2L
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Joined: Thu Jul 11, 2019 12:15 am

S = q/T

Postby Gabriella Bates 2L » Tue Feb 11, 2020 4:59 pm

When using S = q/T, does the temperature need to be constant? Thanks in advance!
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AArmellini_1I
Posts: 107
Joined: Fri Aug 09, 2019 12:15 am

Re: S = q/T

Postby AArmellini_1I » Tue Feb 11, 2020 5:02 pm

Yep! If you have changing temperature then you use delta S = n C ln (T2/T1)
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Megan Cao 1I
Posts: 103
Joined: Sat Sep 07, 2019 12:18 am

Re: S = q/T

Postby Megan Cao 1I » Tue Feb 11, 2020 5:51 pm

yes, the temperature is constant for that equation. if the temperature were to change you would use S = C x ln (T2/T1). for C you would use either Cv or Cp depending on which is constant.
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Jainam Shah 4I
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Joined: Fri Aug 30, 2019 12:16 am

Re: S = q/T

Postby Jainam Shah 4I » Tue Feb 11, 2020 11:03 pm

Yes, that equation assumes that temperature is constant.
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Elizabeth Harty 1A
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Joined: Sat Jul 20, 2019 12:16 am

Re: S = q/T

Postby Elizabeth Harty 1A » Tue Feb 11, 2020 11:05 pm

What is this equation used for?
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Verity Lai 2K
Posts: 100
Joined: Sat Aug 24, 2019 12:18 am

Re: S = q/T

Postby Verity Lai 2K » Wed Feb 12, 2020 11:04 am

This equation is used to find entropy when the temperature is constant. If the temp or volume change, you use the equations delta S= nRln(V2/V1) or delta S= nCln(T2/T1).
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