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Pv=nRT

Posted: Thu Jan 10, 2019 8:44 pm
by Cecilia Jardon 1I
I just wanted to make sure that the units for temperature in this equation is supposed to be in Kelvin?

Re: Pv=nRT

Posted: Thu Jan 10, 2019 8:49 pm
by Aleeque Marselian 1A
Yes, based on Dr. Lavelle's slides in lecture, the temperature in the ideal gas law is measured in Kelvin.

Re: Pv=nRT  [ENDORSED]

Posted: Thu Jan 10, 2019 8:50 pm
by Ashley Kenney 1E
Yes, you're right, ideal gas law uses temperature in Kelvin

Re: Pv=nRT

Posted: Fri Jan 11, 2019 9:29 am
by abbydouglas1K
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.

Re: Pv=nRT

Posted: Fri Jan 11, 2019 9:59 am
by deniise_garciia
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.

Re: Pv=nRT

Posted: Fri Jan 11, 2019 7:36 pm
by Jasmine Chow 1F
yes it is in Kelvin. If you need to convert to K from C add 273.

Re: Pv=nRT

Posted: Sat Jan 12, 2019 2:45 pm
by Henry Dudley 1G
What is the value of R?

Re: Pv=nRT

Posted: Sat Jan 12, 2019 3:39 pm
by Kevin Tang 4L
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.

Re: Pv=nRT

Posted: Sat Jan 12, 2019 5:13 pm
by Lauren Huang 1H
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.

Re: Pv=nRT

Posted: Sat Jan 12, 2019 6:51 pm
by BenJohnson1H
What exactly does each letter represent in PV=nRT? Specifically n, is that the amount of something in moles?

Re: Pv=nRT

Posted: Sun Jan 13, 2019 5:36 pm
by davidryan3f
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.

Re: Pv=nRT

Posted: Sun Jan 13, 2019 5:40 pm
by Emily Kennedy 4L
we only use this equation to convert from partial pressure to concentration and vice versa rt?

Re: Pv=nRT

Posted: Sun Jan 13, 2019 5:59 pm
by Rhea Churi 4K
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