Aqueous in Kp?

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Aqueous in Kp?

Postby ZoeHahn1J » Wed Nov 22, 2017 4:50 pm

If I have a reaction with a reactant or product in an aqueous state, could I calculate Kp or only Kc? If I could calculate Kp, would I just exclude the aqueous reactant/product from the Kp calculation?
Thank you!

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Re: Aqueous in Kp?

Postby aTirumalai-1I » Wed Nov 22, 2017 5:34 pm

I think you only solve for Kp if the compounds in the given reaction are all gases, or if you are given the partial pressures (instead of concentrations) of every compound. Also, solids and liquids are the only states that are omitted from K calculations (Kc and Kp); thus the aqueous reactant/product would still be included in your work.

Madelyn Gehrich 1E
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Re: Aqueous in Kp?

Postby Madelyn Gehrich 1E » Thu Nov 23, 2017 9:40 pm

Remember that molar concentration of a pure substance (solid or liquid) does not change in a reaction, thus solids and liquids not included in K expression. So an aqueous solution should be calculated by Kc.

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