Test Question

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Calvin Patel 2H
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Joined: Fri Sep 28, 2018 12:22 am

Test Question

Postby Calvin Patel 2H » Sat Feb 02, 2019 5:30 am

Just a quick question, would there be a difference in Kp and Kc if you are dealing with gases. Like, wouldn't both values be the same?

Kyle Golden Dis 2G
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Joined: Fri Sep 28, 2018 12:17 am

Re: Test Question

Postby Kyle Golden Dis 2G » Sat Feb 02, 2019 9:48 am

You would usually use Kp when dealing with gases. However, if the question explicitly states find the Kc, then just use Kc when doing calculations.

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Re: Test Question

Postby aaronharouni » Sat Feb 02, 2019 11:29 am

With Kc you must use molar concentrations but for Kp its partial pressures.

Julia Lung 1I
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Joined: Fri Jun 23, 2017 11:39 am

Re: Test Question

Postby Julia Lung 1I » Sat Feb 02, 2019 1:38 pm

Usually the problems specify whether to find the concentration or partial pressure, you can use Kc to also find the K of gases but I think they want us to use Kp for gases

Olivia L 4E
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Joined: Fri Sep 28, 2018 12:23 am
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Re: Test Question

Postby Olivia L 4E » Sat Feb 02, 2019 3:53 pm

As stated above, Kp is designated for gases because it is the equilibrium constant for partial pressure, hence the p. On the other hand, Kc can be used for both aqueous solutions and gases as it is a measurement of concentrations, usually mol/L.

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