## When is pv=nrt used? [ENDORSED]

$PV=nRT$

Posts: 72
Joined: Fri Sep 28, 2018 12:19 am

### When is pv=nrt used?

Can someone please explain to me when the ideal gas law is used?

Timothy_Yueh_4L
Posts: 57
Joined: Fri Sep 28, 2018 12:28 am

### Re: When is pv=nrt used?  [ENDORSED]

You would use the ideal gas law if the question gave you a both concentration and pressure values which you would use to convert all the values to either concentration or pressure to solve for the equilibrium constant.

Isabelle Fontanilla 1I
Posts: 60
Joined: Fri Sep 28, 2018 12:19 am

### Re: When is pv=nrt used?

Also, the constants sheet should have the gas constant, R, on it. For this, use the most appropriate form so you will have common units. As for temperature, T, it should be given in the problem. Like the previous answer stated, use the Ideal Gas Law to convert between concentration and partial pressure.

Emily Kennedy 4L
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Joined: Fri Sep 28, 2018 12:25 am
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### Re: When is pv=nrt used?

and the concentration is the number of moles over the volume

Rachel Yoo 1F
Posts: 65
Joined: Fri Sep 28, 2018 12:24 am

### Re: When is pv=nrt used?

You can use PV=NRT in any situation when given any three out of the four: pressure, volume, number of moles, or temperature. R=.08206. In this instance, we use it to convert Kc to Kp or vice versa

isarose0
Posts: 62
Joined: Fri Sep 28, 2018 12:15 am

### Re: When is pv=nrt used?

You can use this equation to find an unknown (pressure, volume, molarity or temp)