Equations

[jane_ni_2d]

What is the difference between Kc and Kp?

[Matthew Tran 1H]

Kc is calculated using the equilibrium molar concentrations of products and reactants while Kp is calculated using the equilibrium partial pressures of products and reactants and can only be used for gases. You can relate the two using P=(concentration)RT.

[Jonathan Zhao 4H]

Yes, you could easily convert between partial pressure to concentration by using PV=nRT.

[anthony_trieu2L]

When you are given equilibrium concentrations, you must use Kc to calculate the equilibrium constant. This can apply to both aqueous solutions and gases. In contrast, Kp can only be used to calculate the equilibrium constant of partial pressures. Kp cannot be applied to aqueous solutions since they do not have partial pressures.

[Cole Doolittle 2K]

Kp = Kc x (RT) ^ stoichiometric coefficient

In general, Kp uses partial pressures and Kc uses concentrations

[Phil Timoteo 1K]

Kc uses concentration and Kp uses partial pressure

[Hilda Sauceda 3C]

Kc- concentration and Kp- partial pressure