## 9.25 6th edition

Boltzmann Equation for Entropy: $S = k_{B} \ln W$

Esther Lee 4H
Posts: 67
Joined: Fri Sep 28, 2018 12:29 am

### 9.25 6th edition

9.25: if SO2F2 adopts a positionally disordered arrangement in its crystal form, what might its residual molar entropy be?

I know you use the S=Kb*ln(W) equation and that it has 6 possible orientations but how would I know how many molecules are in it? the answer book says ln(6^6.02x10^23) but where did they get the 6.02x10^23?

Mindy Kim 4C
Posts: 65
Joined: Fri Sep 28, 2018 12:25 am

### Re: 9.25 6th edition

Since the question asks for residual molar entropy, they are asking for the residual entropy for one mole of SOF2. There are 6.022x10^23 molecules (Avogadro's number) in one mole.

Esther Lee 4H
Posts: 67
Joined: Fri Sep 28, 2018 12:29 am

### Re: 9.25 6th edition

Mindy Kim 4C wrote:Since the question asks for residual molar entropy, they are asking for the residual entropy for one mole of SOF2. There are 6.022x10^23 molecules (Avogadro's number) in one mole.

ohhh that makes a lot of sense thank you

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