Kp and Kc when you have gases and aqueous solutions

[romina_4C]

I don't know if this is even possible, but if you have a reaction with both gases and aqueous solutions and you needed to calculate the equilibrium constant, would you use Kp (ignoring aqueous solutions?) or Kc (convert partial pressure to concentration?)?

[Alex Chen 2L]

This situation is called a heterogeneous equilibrium, and both gases and aqueous solutions have to be part of the equilibrium constant. Therefore, since aqueous solutions can only be measured in concentration, you would use the ideal gas law PV = nRT to convert the partial pressure of any gases into a molar concentration and write the equilibrium constant as Kc.