When to Use Different Formulas for Work


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Michelle_Nguyen_3F
Posts: 40
Joined: Wed Sep 21, 2016 2:59 pm

When to Use Different Formulas for Work

Postby Michelle_Nguyen_3F » Tue Jan 31, 2017 10:34 pm

In which situations/under which conditions would we use or ?

Jenna_Hakel_2A
Posts: 34
Joined: Fri Jul 15, 2016 3:00 am

Re: When to Use Different Formulas for Work

Postby Jenna_Hakel_2A » Tue Jan 31, 2017 10:45 pm

We use w=-PdeltaV when the pressure against which the gas is expanding is constant. However, we use the second equation when the pressure is variable, such as when the expansion is reversible.

Derek Lee 2K
Posts: 30
Joined: Sat Jul 09, 2016 3:00 am

Re: When to Use Different Formulas for Work

Postby Derek Lee 2K » Wed Feb 01, 2017 2:24 pm

It basically boils down to irreversible reactions which is the first equation and reversible ones which is the second.


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