Work Equations

isochoric/isometric:
isothermal:
isobaric:

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Giselle1B
Posts: 26
Joined: Fri Sep 28, 2018 12:19 am

Work Equations

Postby Giselle1B » Fri Feb 08, 2019 11:22 pm

What are all the formulas associated to finding work and how do you know which one to use?

Alexa Tabakian 1A
Posts: 38
Joined: Fri Sep 28, 2018 12:20 am

Re: Work Equations

Postby Alexa Tabakian 1A » Fri Feb 08, 2019 11:51 pm

There is w=-PdeltaV, w=nRTln(V2/V1), and w=nRTln(P1/P2)
The first one would be used for constant pressure and irreversible reactions. The second and third ones would be used in isothermic reversible expansions.

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

Re: Work Equations

Postby JadeSebti1L » Sat Feb 09, 2019 10:41 am

As Alexa said, the first is for the irreversible reaction (the graph shown in class with the box-shaped integral). The second and third are under reversible conditions and are ultimately integrals of V and P in respect to one another (think about the area under the curve shaped graph that Lavelle showed us in class).


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