## Pv=nRT [ENDORSED]

$PV=nRT$

Cecilia Jardon 1I
Posts: 74
Joined: Fri Sep 28, 2018 12:16 am

### Pv=nRT

I just wanted to make sure that the units for temperature in this equation is supposed to be in Kelvin?

Aleeque Marselian 1A
Posts: 60
Joined: Fri Sep 28, 2018 12:24 am

### Re: Pv=nRT

Yes, based on Dr. Lavelle's slides in lecture, the temperature in the ideal gas law is measured in Kelvin.

Ashley Kenney 1E
Posts: 32
Joined: Wed Nov 14, 2018 12:23 am

### Re: Pv=nRT  [ENDORSED]

Yes, you're right, ideal gas law uses temperature in Kelvin

abbydouglas1K
Posts: 65
Joined: Fri Sep 28, 2018 12:26 am

### Re: Pv=nRT

Yes the temperature should be in Kelvin but you must make sure that the temperature stays the same throughout the reaction or the equilibrium constant will be correct.

deniise_garciia
Posts: 30
Joined: Wed Nov 16, 2016 3:04 am

### Re: Pv=nRT

if in any case it is given in Celsius you only have to add 273.15 to the given temp. and it'll give you the Kelvin temp.

Jasmine Chow 1F
Posts: 60
Joined: Fri Sep 28, 2018 12:16 am
Been upvoted: 1 time

### Re: Pv=nRT

yes it is in Kelvin. If you need to convert to K from C add 273.

Henry Dudley 1G
Posts: 61
Joined: Fri Sep 28, 2018 12:16 am

### Re: Pv=nRT

What is the value of R?

Kevin Tang 4L
Posts: 83
Joined: Fri Sep 28, 2018 12:28 am

### Re: Pv=nRT

Henry Dudley 1G wrote:What is the value of R?

The value of R is the gas constant, which I'm guessing will be a given value.

Lauren Huang 1H
Posts: 60
Joined: Fri Sep 28, 2018 12:16 am

### Re: Pv=nRT

Since there are multiple values of R, make sure the units of the R you are using cancel out/correspond with the other units in the equation.

BenJohnson1H
Posts: 68
Joined: Fri Sep 28, 2018 12:17 am

### Re: Pv=nRT

What exactly does each letter represent in PV=nRT? Specifically n, is that the amount of something in moles?

davidryan3f
Posts: 63
Joined: Fri Sep 28, 2018 12:23 am

### Re: Pv=nRT

Henry Dudley 1G wrote:What is the value of R?

R= 0.08206 L atm/mol K. This is given to us on tests I believe.

Emily Kennedy 4L
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Joined: Fri Sep 28, 2018 12:25 am
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### Re: Pv=nRT

we only use this equation to convert from partial pressure to concentration and vice versa rt?

Rhea Churi 4K
Posts: 62
Joined: Fri Sep 28, 2018 12:28 am

### Re: Pv=nRT

Emily Kennedy 4L wrote:we only use this equation to convert from partial pressure to concentration and vice versa rt?

Yes, you would use P/RT=Concentration

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