## Pressure units

$PV=nRT$

Reva Kakaria 1J
Posts: 62
Joined: Fri Sep 28, 2018 12:23 am
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### Pressure units

For units of partial pressure, should we use bars or atmospheres? What is the difference between the two?

Sydney To 1D
Posts: 60
Joined: Fri Sep 28, 2018 12:15 am

### Re: Pressure units

You would commonly use torr or atmosphere as the units for partial pressure. I would stick with atmospheres to be safe. A bar is atmospheric pressure at sea level and equals 100 kilopascals.

Ian Marquez 2K
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### Re: Pressure units

At the end of lecture, Professor Lavelle briefly stated that you should use atmosphere as the unit for partial pressure.

105085381
Posts: 44
Joined: Fri Sep 28, 2018 12:15 am

### Re: Pressure units

I think we are fine labeling the units for Kp as either bars or atmosphere. Whereas, Kc is identified in molar/moles.

Brian Cook
Posts: 34
Joined: Fri Sep 28, 2018 12:15 am

### Re: Pressure units

I believe for Kp we use bars but for solving for anything using the equation Pv=nRT we use atmospheres. Hope this helps :)