Kc vs Kp

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Areena H 2K
Posts: 81
Joined: Wed Dec 05, 2018 12:18 am

Kc vs Kp

Postby Areena H 2K » Sun Jan 12, 2020 4:38 pm

Is Kc only for aqueous solutions while Kp is for gases because there was a question in the lecture where it had gases but was still using Kc?

Anna Chen 1K
Posts: 104
Joined: Thu Jul 25, 2019 12:18 am

Re: Kc vs Kp

Postby Anna Chen 1K » Sun Jan 12, 2020 5:26 pm

Kc is defined by molar concentrations while Kp is defined by the partial pressures of the gasses.

Sidharth D 1E
Posts: 98
Joined: Sat Aug 24, 2019 12:17 am

Re: Kc vs Kp

Postby Sidharth D 1E » Sun Jan 12, 2020 7:39 pm

Yes, they are both calculated the same way, and the states of the reactants and products will identify whether to use Kc or Kp.

Ian Morris 3C
Posts: 101
Joined: Wed Sep 18, 2019 12:18 am

Re: Kc vs Kp

Postby Ian Morris 3C » Sun Jan 12, 2020 8:39 pm

Also, when answering, make sure each concentration is in brackets while pressure will be in parenthesis.

Posts: 101
Joined: Tue Sep 24, 2019 12:17 am

Re: Kc vs Kp

Postby 005162520 » Sun Jan 12, 2020 8:53 pm

If given partial pressures we calculate Kp, but if concentrations are given we calculate Kc.

Shrayes Raman
Posts: 129
Joined: Sat Jul 20, 2019 12:15 am

Re: Kc vs Kp

Postby Shrayes Raman » Sun Jan 12, 2020 11:48 pm

Kc = Concentrions Kp = Partial Pressures. If given partial pressures use Kp and vice versa. This will tell you state of materials

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