Kc

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Abigail Menchaca_1H
Posts: 104
Joined: Sat Sep 07, 2019 12:19 am

Kc

Postby Abigail Menchaca_1H » Sun Jan 12, 2020 4:57 pm

So solids and aqueous solutions can be used to solve for Kc?

KSong_1J
Posts: 101
Joined: Thu Jul 11, 2019 12:17 am

Re: Kc

Postby KSong_1J » Sun Jan 12, 2020 5:07 pm

I think you can use aqueous solutions and gases to solve for Kc but you don’t include solids or liquids

Jessica Katzman 4F
Posts: 35
Joined: Mon Jun 17, 2019 7:24 am

Re: Kc

Postby Jessica Katzman 4F » Sun Jan 12, 2020 5:07 pm

Kc denotes the equilibrium constant in terms of molar concentrations. Aqueous solutions have concentrations so they are included in the expression, but solids do not so they do not factor into the Kc expression.

Justin Quan 4I
Posts: 104
Joined: Sat Sep 14, 2019 12:17 am

Re: Kc

Postby Justin Quan 4I » Mon Jan 13, 2020 12:19 pm

To add on, for a homogeneous aqueous mixture, we can simply include all the aqueous species when calculating K or Q. However, if there is a heterogeneous equilibria, chances are there is a solid or liquid species in solution. Hence, you will have to be careful to exclude all liquid and solid species when calculating K or Q.

105335337
Posts: 103
Joined: Sat Aug 24, 2019 12:15 am

Re: Kc

Postby 105335337 » Mon Jan 13, 2020 12:27 pm

Solids & liquids are excluded when solving for Kc. Only gases and aqueous solutions are included.

pmokh14B
Posts: 107
Joined: Sat Aug 17, 2019 12:15 am

Re: Kc

Postby pmokh14B » Mon Jan 13, 2020 12:28 pm

I think you can use aqueous solutions and gasses, but not solids or liquids.


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