Q rev?


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Q rev?

Postby Grace_Stevenson_1A » Sat Jan 28, 2017 12:18 pm

In the equation delta S=q rev/T, what does rev stand for and how do you get that value? Thank you!

Pauline Tze 3B
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Re: Q rev?

Postby Pauline Tze 3B » Sat Jan 28, 2017 12:36 pm

Hi Grace!
rev stands for reversible and you can get this value by solving for q (heat) in different ways depending on the problem you're being asked. For example, you might combine it with q = C delta T or if it's an isothermal reversible problem, then you can deduce change in internal energy (delta U) will be 0, so q = -w and you can combine the delta S = q (rev)/T with any work equation.

I hope that helps!

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