PV=nRT  [ENDORSED]


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Tim Foster 2A
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Joined: Fri Sep 29, 2017 7:07 am

PV=nRT

Postby Tim Foster 2A » Mon Nov 20, 2017 2:14 pm

What do all of the different variables in the ideal gas law above represent?

Chem_Mod
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Re: PV=nRT  [ENDORSED]

Postby Chem_Mod » Mon Nov 20, 2017 2:17 pm

P is Pressure
V is Volume
n is the moles of gas
T is temperature
R is a constant (the value you choose depends on which units you are using).

For example, in this class, you usually use 0.08206, in which you should use atm, L, K.

Wayland Leung
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Re: PV=nRT

Postby Wayland Leung » Mon Nov 20, 2017 2:38 pm

what are the units for each variable? Are there different units for pressure? How do we convert them to atm?

Sandhya Rajkumar 1C
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Re: PV=nRT

Postby Sandhya Rajkumar 1C » Mon Nov 20, 2017 3:35 pm

As the reply above said, the constant (R) usually used in this class is 0.08206. This constant is used when pressure (P) is measured in atm, volume (V) is measured in liters (L), n is the moles of gas, and temperature (T) is measured in Kelvin (K).

Andy Nguyen 1A
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Re: PV=nRT

Postby Andy Nguyen 1A » Mon Nov 20, 2017 3:56 pm

If the pressure isn't given in atm, then you can use 760 mmHg = 1 atm and 101.325 kPa = 1 atm.


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