Answer
$K_{c}= \frac{[C]^{c}[D]^{d}}{[A]^{a}[B]^{b}}$
Work Step by Step
The product of concentrations of the reaction products raised to the respective stoichiometric coefficient in the balanced chemical equation is taken as the numerator and the product of concentrations of the reactants raised to their individual stoichiometric coefficients is taken as the denominator of the fraction to obtain the equilibrium constant.
