## Units for Entropy

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

Elizabeth Ignacio 1C
Posts: 39
Joined: Fri Sep 29, 2017 7:07 am

### Units for Entropy

Why are the units for entropy sometimes J/K and other times J/K/mol?

Danah Albaaj 1I
Posts: 50
Joined: Fri Sep 29, 2017 7:07 am

### Re: Units for Entropy

I believe it depends on whether the question is asking you for the entropy per mole of the substance or not.

204918982
Posts: 50
Joined: Fri Sep 29, 2017 7:04 am

### Re: Units for Entropy

Yeah I think the standard units are just J/K and J/K/mol is used when the question asks for the entropy per mole.

Wenting Hu 2H
Posts: 33
Joined: Fri Sep 29, 2017 7:06 am

### Re: Units for Entropy

sometimes per mole means per the coefficient of each element of the equation.

Timothy Kim 1B
Posts: 62
Joined: Fri Sep 29, 2017 7:04 am

### Re: Units for Entropy

It depends on the question, whether it is asking entropy per mole or not.