## reversible process

$w=-P\Delta V$
and
$w=-\int_{V_{1}}^{V_{2}}PdV=-nRTln\frac{V_{2}}{V_{1}}$

Noh_Jasmine_1J
Posts: 71
Joined: Fri Sep 28, 2018 12:15 am

### reversible process

is the value for R in the equation w=-nRTln(V2/V1) always the same?

Chloe Thorpe 1J
Posts: 77
Joined: Fri Sep 28, 2018 12:16 am

### Re: reversible process

Yes, R is a constant. It only changes slightly due to different units used, but it is typically 8.314 J·K-1·mol-1. You can find this on the Constants and Equations worksheet on the class website.

Ronald Thompson 1F
Posts: 59
Joined: Fri Sep 28, 2018 12:25 am

### Re: reversible process

Yes, R is the same because it is a constant. It will be given on the constants and equations sheet

Irene Zhou 1E
Posts: 73
Joined: Fri Sep 28, 2018 12:18 am

### Re: reversible process

R is a constant so it is always the same. There are different units though so the constant can change based on that. Pay attention to the units given in the problems