Equation


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Leslie Almaraz 4G
Posts: 99
Joined: Fri Aug 02, 2019 12:16 am

Equation

Postby Leslie Almaraz 4G » Fri Feb 07, 2020 5:53 pm

Can we always replace the q,rev with the change in enthalpy?

Angela Patel 2J
Posts: 110
Joined: Sat Aug 24, 2019 12:17 am

Re: Equation

Postby Angela Patel 2J » Fri Feb 07, 2020 6:35 pm

For calculating delta S, you can substitute qrev for delta H. Remember that this is only true when there is constant pressure.

Leonardo Le Merle 1D
Posts: 56
Joined: Wed Feb 27, 2019 12:16 am

Re: Equation

Postby Leonardo Le Merle 1D » Fri Feb 07, 2020 8:52 pm

What are we meant to use if it is not reversible expansion?

Angela Patel 2J
Posts: 110
Joined: Sat Aug 24, 2019 12:17 am

Re: Equation

Postby Angela Patel 2J » Fri Feb 07, 2020 11:18 pm

Leonardo Le Merle 1D wrote:What are we meant to use if it is not reversible expansion?


You can use the equation S = nRln(v1/v2) if the pressure is not constant.


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