Writing K expression with or without aq?

[ckilkeary 2G]

I know that when writing K and Q expressions you don't include molecules in solid and liquid state. But what about aqueous?

[Jordan Young 2J]

You do include molecules that are in an aqueous solution (aq)

[Abby Soriano 1J]

If the reactants and products are in the aqueous state, then you should include them in your K expression (more specifically in regards to Kc).

[Alexandra Bartolome 2H]

Reactants and products that are in the aqueous state are included. As the other person said, it's pretty much used with Kc.

[Connor Ho 1B]

Aqueous solutions do contribute to the K expression since those solutions can change in concentration (measurably) over time.

[Dina 2k]

Aqueous solutions are included since it's not a pure liquid. it is present as a water solution, but it may change how it behaves in a reaction. anything labeled as a liquid is a pure substance therefore not included when calculating K. pure liquids and solids have activities that are equal to 1.