## When to use different R values

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

Janet Nguy 2C
Posts: 115
Joined: Sat Aug 24, 2019 12:17 am

### When to use different R values

So R = 8.3145 and R = 0.08206
Under what circumstances would we have to differentiate between these two values when problem solving? How do we know when to use either constant?

Caitlyn Tran 2E
Posts: 100
Joined: Fri Aug 09, 2019 12:15 am

### Re: When to use different R values

You can determine what R value to use based on the units. Compare the units you are given to the units of each constant and go from there. Hope this helps!

Rida Ismail 2E
Posts: 139
Joined: Sat Sep 07, 2019 12:16 am

### Re: When to use different R values

The R is equivalent. It just depends on what units Lavelle will give us in a problem. Bases on the units we can determine with to use.