Changes in Partial Pressure

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MaanasO 1A
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Joined: Fri Sep 28, 2018 12:26 am

Changes in Partial Pressure

Postby MaanasO 1A » Sun Jan 13, 2019 9:31 am

Whenever we come across a problem that asks for the change in the system when the partial pressure of a gas changed, do we assume that the volume/concentration has changed and that temp is konstant?

megansardina2G
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Joined: Fri Sep 28, 2018 12:23 am
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Re: Changes in Partial Pressure

Postby megansardina2G » Sun Jan 13, 2019 9:50 am

Yes. K does not change when the pressure changes, and since K is temperature dependent you know that the temperature is also constant. Therefore, the volume/concentration has to be the changing factor.

ryanhon2H
Posts: 60
Joined: Fri Sep 28, 2018 12:28 am

Re: Changes in Partial Pressure

Postby ryanhon2H » Sun Jan 13, 2019 12:55 pm

I think Dr. Lavelle said in class that pressure can also be changed by pumping an inert gas, so that wouldn't change the concentration compared to changing the volume, but K would still stay the same either way.

Griffin Carter 2I
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Joined: Wed Nov 14, 2018 12:23 am

Re: Changes in Partial Pressure

Postby Griffin Carter 2I » Sun Jan 13, 2019 2:04 pm

Temperature can be assumed to stay constant in a changing pressure but the question should state specifically whether or not the volume has changed or the pressure has changed from an inert gas because that affects the Q value when comparing to K.

Arta Kasaeian 2C
Posts: 30
Joined: Mon Jan 07, 2019 8:22 am

Re: Changes in Partial Pressure

Postby Arta Kasaeian 2C » Sun Jan 13, 2019 2:37 pm

I think in our textbook the temperature is assumed to be stationary because if it changes everything else in the equation changes and with it so does K equilibrium constant.

Jonathan Pai 2I
Posts: 121
Joined: Fri Sep 28, 2018 12:27 am

Re: Changes in Partial Pressure

Postby Jonathan Pai 2I » Sun Jan 13, 2019 2:38 pm

Everything is assumed to remain the same unless it is explicitly stated.


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