## T variable in pv=nrt

$PV=nRT$

Bryce Ramirez 1J
Posts: 120
Joined: Sat Aug 24, 2019 12:16 am

### T variable in pv=nrt

For the temperature in every calculation using the ideal gas formula, will it always be in Kelvin or will there be times where it is in Celcius? I know that the units have to cancel from the gas constant, but I'm not sure if there is any gas constant that requires celcius instead of Kelvin.

vpena_1I
Posts: 109
Joined: Sat Aug 24, 2019 12:15 am

### Re: T variable in pv=nrt

All gas constants are in Kelvin, so unless you really wanted to convert these to Celsius, its easier to convert Celsius to kelvin from the get-go.

Zoya Mulji 1K
Posts: 105
Joined: Thu Jul 11, 2019 12:15 am

### Re: T variable in pv=nrt

you should probably always keep it in Kelvin just to be safe because if it cancels out it won't matter anyways.

SMIYAZAKI_1B
Posts: 63
Joined: Sat Aug 24, 2019 12:15 am

### Re: T variable in pv=nrt

It is better to keep it in Kelvin just because of the unit of the gas constant, R, has Temperature in Kelvin. In order to cancel out the units, you really have to make sure that units match and if you really really need Celcius, make sure to change the unit after figuring the Kelvin.

Alfred Barrion 2H
Posts: 100
Joined: Sat Jul 20, 2019 12:16 am

### Re: T variable in pv=nrt

For simplicity, it would be easier to use Kelvin, especially since Kelvin is used in the constants.

Frank He 4G
Posts: 50
Joined: Tue Nov 12, 2019 12:19 am

### Re: T variable in pv=nrt

We should always work in kelvin just to be safe, so I'd convert to kelvin if needed and keep it that way. If the problem asks for a value using Celsius, then convert it back at the end.

Katie Kyan 2K
Posts: 106
Joined: Fri Aug 09, 2019 12:16 am
Been upvoted: 1 time

### Re: T variable in pv=nrt

I think I would keep the units in Kelvin because this is usually what we work with and most likely the temperature will be given to you in Kelvin.

Alan Cornejo 1a
Posts: 98
Joined: Fri Aug 30, 2019 12:15 am

### Re: T variable in pv=nrt

Using kelvin is most advisable as it is an easy conversion, and it allows for the matchup of all the right units for your equation.

KHowe_1D
Posts: 103
Joined: Thu Jul 25, 2019 12:15 am
Been upvoted: 1 time

### Re: T variable in pv=nrt

Since Kelvin would be canceled out by the units of R, you should convert all temperatures to K.

Nawal Dandachi 1G
Posts: 102
Joined: Sat Sep 28, 2019 12:16 am

### Re: T variable in pv=nrt

You should convert temperature to kelvin because you are using R which uses Kelvin.

Gurmukhi Bevli 4G
Posts: 49
Joined: Wed Nov 14, 2018 12:20 am

### Re: T variable in pv=nrt

I would keep it in Kelvin at all times, just to be safe.