Neglecting solids and liquids

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Aneri Chouhan
Posts: 11
Joined: Wed Sep 21, 2016 1:56 pm

Neglecting solids and liquids

Postby Aneri Chouhan » Fri Nov 18, 2016 11:28 am

What is the reason for ignoring the concentrations of solids and liquids in the expressions for Kc and Qc?

Michael Lesgart 1H
Posts: 26
Joined: Wed Sep 21, 2016 1:57 pm

Re: Neglecting solids and liquids

Postby Michael Lesgart 1H » Fri Nov 18, 2016 11:56 am

You ignore the concentration of solids and liquids because they have a constant concentration. Liquids and solids cannot be compressed because the molecules are very close together; without compression there is no change is concentration (like there is when gasses are compressed.) For these reasons, you just ignore the concentrations of solids and liquids on both sides of the equation and just compute the Kc/Kp using the gasses.


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