Enter the molar concentration and coefficients of the 4 substances into the calculator. The calculator will evaluate and display the equilibrium constant of those substances.

## Equilibrium Constant Formula

The following formula can be used to calculate the equilibrium constant of a solution.

K = ([C]^c * [D]^d)/([B]^b * [A]^a)
• Where K is the equilibrium constant
• [A,B,C,D] are the molar concentrations of those substances
• a,b,c,d are the coefficients of each substance

To calculate the equilibrium constant, take each molar concentration and raise it to the power of the coefficient of each substance. Next, multiply the results from C and D together and divide by the product of the results B and A together.

## Equilibrium Constant Definition

An equilibrium constant is a constant used to describe when a solution will be at equilibrium.

## Equilibrium Constant Example

How to calculate equilibrium constant?

1. First, determine the molar concentrations of each substance

Calculate or measure the concentrations of each individual substance.

2. Next, determine the coefficients

Determine the corresponding coefficients of each substance.

3. Calculate the equilibrium constant

Using the information from steps 1 and 2, calculate the equilibrium constant.

## FAQ

What is an equilibrium constant?

An equilibrium constant is a constant used to describe when a solution will be at equilibrium.