Kc vs Kp

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Bryce Barbee
Posts: 103
Joined: Wed Sep 18, 2019 12:20 am

Kc vs Kp

Postby Bryce Barbee » Thu Jan 16, 2020 11:21 am

Can Kc be used when working with only gases or is Kp the only equilibrium constant used?

rachelle1K
Posts: 109
Joined: Sat Sep 07, 2019 12:16 am

Re: Kc vs Kp

Postby rachelle1K » Thu Jan 16, 2020 11:25 am

Kc can also be used with gases, I think in the problem they will specifically ask for Kc/Kp, otherwise, Lyndon told us in a workshop that Kc is usually used.

BritneyP- 2c
Posts: 101
Joined: Sat Sep 14, 2019 12:15 am

Re: Kc vs Kp

Postby BritneyP- 2c » Thu Jan 16, 2020 11:27 am

You can use Kc with gases, but then they would usually provide the Kc for the gas already so that you can find one of the products or reactants, or they give you the molarity of the products and reactants. If they don't, then typically you use Kp

Sally Qiu 2E
Posts: 105
Joined: Fri Aug 30, 2019 12:18 am

Re: Kc vs Kp

Postby Sally Qiu 2E » Thu Jan 16, 2020 11:28 am

usually Kc is used, but i believe the problem would specify which one to use. you can also tell by the information given by a problem

Max Madrzyk Dis 4G
Posts: 102
Joined: Wed Sep 18, 2019 12:21 am

Re: Kc vs Kp

Postby Max Madrzyk Dis 4G » Thu Jan 16, 2020 11:31 am

I think Kc can be used with both but I think usually the problem will specify whether to find Kc or Kp. :)

Betania Hernandez 2E
Posts: 107
Joined: Fri Aug 02, 2019 12:15 am

Re: Kc vs Kp

Postby Betania Hernandez 2E » Thu Jan 16, 2020 11:44 am

Kc can be used with gases if they give the concentrations of reactants and products in molarity.


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