Equilibrium Constant Kc & Kp

What is Kc

The equilibrium constant (K) is a mathematical expression that describes the ratio of product to reactant concentrations at equilibrium in a chemical reaction

When is Kc only used

In a homogeneous reaction- with reactants and products in the same phase. For heterogeneous reactions, the concentration of the solid is ignored because it is dependent on its density rather than volume

Why is a high value of Kc/Kp preferred

Because it favours the production of products

Example of Calculations

What factors affect Kc/Kp

Only temperature affects Kc

When is Kp used

With gases

How is partial pressure calculated

Example of calculation