Equilibrium Constant Calculator

Online Tutoring Is The Easiest, Most Cost-Effective Way For Students To Get The Help They Need Whenever They Need It.


Equilibrium constant is the ratio between the molar concentrations of the products and the molar concentrations of the reactions. Equilibrium constant plays a very important role in determining the extent till which equilibrium is attained for a chemical reaction. Equilibrium constant calculator is the instant tool which can calculate the value of it.

Example 1: Write the expressions for equilibrium constant for the given chemical reactions:
a)    Na+1(aq) + Cl-1(aq)èNaCl(aq)
Equilibrium constant, Kc = [NaCl]/ ([Na+1] * [Cl-1])
b)    2SO2(g) + O2(g) è 2SO3(g)
Equilibrium constant, Kc = [SO3]2/ ([SO2]2 * [O2])
c)    CaCO3(s)èCaO(s) + CO2(g)
Equilibrium constant, Kc = [CO2]

Here for the above reaction we do not consider CaO or CaCO3 because they are in solid state and for the Equilibrium constant formula, solids are not included.

Example 2: Given the reaction N2(g) + H2(g)  >  NH3(g). Find the equilibrium constant for this reaction if the molar concentrations given are:

[NH3]= 0.100M, [N2] = 0.05M and [H2] = 0.01M

The balanced chemical reaction is: N2(g) + 3H2(g) > 2NH3(g)

The Equilibrium constant of a chemical equation represented by Kc for this reaction is:

Kc = [NH3]2/ ([N2] * [H2]3)

Kc = (0.100)2/ (0.05 * 0.013)

Kc = 2.00 * 105

HAVE A QUESTION? Chat With Our Tutoring Experts Now