## When to use differential form

Volume: $\Delta S = nR\ln \frac{V_{2}}{V_{1}}$
Temperature: $\Delta S = nC\ln \frac{T_{2}}{T_{1}}$

Charles Hood Disc 1C
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### When to use differential form

When do I use ΔS=q/t instead of ΔS= nC(ln(T2/T1))

Chem_Mod
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### Re: When to use differential form

You use the q/T equation if temperature is constant. Q is also only for the heat used in a reversible reaction. You use the other equation to calculate a change in entropy associated with a change in temperature. Hope that helps!

daniella_knight1I
Posts: 57
Joined: Fri Sep 28, 2018 12:18 am

### Re: When to use differential form

If there is a change in temperature you would use the second equation.