Application of Equilibrium Constant:-

1. It help to predict the extent of reaction on the basis of its magnitude.
2. It predict the direction of reaction.
3. It help to calculate equilibrium concentration.

• If the magnitude of equilibrium constant is greater than (10)³, it means the reaction proceeds nearly to  completion.                                                           K_C = 2.4 x 10⁴⁷     [most of reactant converted to product)                                                   
• If K is less than (10)^-3, reactant predominate over product if K is very small, the reaction proceeds to very small extent. [Only small amount of reactant converted into product. If means reaction products to small extent.
• If K is in the range of 10^-3 to 10³, reaction completed to about 50%.