Equilibrium Constant (Kc)

Calculate Kc for a reaction aA + bB ⇌ cC + dD from equilibrium concentrations.

[A] (mol/L)

Coefficient a

[B] (mol/L)

Coefficient b

[C] (mol/L)

Coefficient c

[D] (mol/L, optional)

Coefficient d

About this calculator

Kc = [C]^c [D]^d / ([A]^a [B]^b). Enter equilibrium concentrations and the balanced-equation coefficients; leave a species blank to leave it out.