Gas Law


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Jina Kwon
Posts: 100
Joined: Fri Aug 09, 2019 12:15 am

Gas Law

Postby Jina Kwon » Wed Jan 08, 2020 2:15 pm

How does the gas law apply to chemical equilibrium?

Ronak Naik
Posts: 103
Joined: Sat Jul 20, 2019 12:15 am

Re: Gas Law

Postby Ronak Naik » Wed Jan 08, 2020 2:17 pm

The gas law is an expression that relates P and V to concentration. Thus it allows you to convert between partial pressures and concentration of a reactant or product that is in equilibrium during a reaction.

Esha Chawla 2E
Posts: 108
Joined: Thu Jul 25, 2019 12:17 am

Re: Gas Law

Postby Esha Chawla 2E » Wed Jan 08, 2020 2:22 pm

Jina Kwon wrote:How does the gas law apply to chemical equilibrium?


The ideal gas law is PV = nrt. So, if you are given the pressures of a gas in a problem, and it asks you to find Kc, you can plug the pressure into PV = nRT, and solve for n/V (moles/volume, or molarity). Using this value, you can find Kc.

Similarly, if you are given the concentrations and it asks you to find Kp, plus the concentrations in instead of n/V (molarity) and solve for P. Using this value, you can find Kp.

Areli C 1L
Posts: 95
Joined: Wed Nov 14, 2018 12:19 am

Re: Gas Law

Postby Areli C 1L » Wed Jan 08, 2020 5:59 pm

I believe Prof. Lavelle mentioned it in class today. The gas law allows you to relate Pressure and Volume to concentration. You are then able to convert between partial pressures and concentration of a reactant in a reaction. [Conc.]=P/(RT)

KBELTRAMI_1E
Posts: 108
Joined: Sat Jul 20, 2019 12:17 am

Re: Gas Law

Postby KBELTRAMI_1E » Wed Jan 08, 2020 8:06 pm

Ronak Naik wrote:The gas law is an expression that relates P and V to concentration. Thus it allows you to convert between partial pressures and concentration of a reactant or product that is in equilibrium during a reaction.


When is it relevant to use this?

SarahCoufal_1k
Posts: 102
Joined: Thu Jul 25, 2019 12:17 am

Re: Gas Law

Postby SarahCoufal_1k » Wed Jan 08, 2020 8:17 pm

It allows us to convert between the partial pressure and molar concentration. the ideal gas law is PV=nRT. You then modify the equation so P=nRT/V and n/v is mol/L which is concentration. When you isolate that, p/RT=n/V which mean p/RT=concentration n. This means that partial pressure/ (gas constant * temp)= molar concentration

Hailey Kim 4G
Posts: 110
Joined: Sat Jul 20, 2019 12:16 am

Re: Gas Law

Postby Hailey Kim 4G » Wed Jan 08, 2020 8:20 pm

The ideal gas law allows you to be able to convert between partial pressure and concentration.

PV=nRT
P=(n/v)RT
P=(conc)RT


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