K vs Kc

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Erik Buetow 1F
Posts: 96
Joined: Fri Aug 30, 2019 12:15 am

K vs Kc

Postby Erik Buetow 1F » Sun Jan 12, 2020 11:08 am

In many of the problems that we are doing it will give us a “K” value that is often very large (say 400). What is the difference between this value, K, and the equilibrium constant, Kc and how do you convert between the two?

Deepika Reddy 1A
Posts: 125
Joined: Thu Jul 11, 2019 12:15 am

Re: K vs Kc

Postby Deepika Reddy 1A » Sun Jan 12, 2020 11:11 am

The K and Kc values are the same things. Therefore, there is no conversion you need to do between the two. I believe they will specify Kp if it is the one being used.

jisulee1C
Posts: 149
Joined: Thu Jul 25, 2019 12:17 am

Re: K vs Kc

Postby jisulee1C » Sun Jan 12, 2020 11:35 am

Kc stands for the equilibrium constant when using concentration values to calculate. Often K is used to represent either Kc or Kp.

Jared Khoo 1G
Posts: 107
Joined: Wed Sep 18, 2019 12:16 am

Re: K vs Kc

Postby Jared Khoo 1G » Sun Jan 12, 2020 11:49 am

The textbook seems to not specify the K value, by this I mean Kc or Kp. The K values should all be the same though, it is just convention to use partial pressure when dealing with only gasses and concentration in other circumstances.


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