Change in Equilibrium Constant

[Rakhi Ratanjee 1D]

Does the equilibrium constant change when the stoichiometric constants in the equation are halved?

[Emily Oren 3C]

Yes the equilibrium constant will change if the stoichiometric coefficients are halved. For example for the reaction 2A <--> 3B

K1 = [B]^3 / [A]^2

which is not the same as the equilibrium constant of the reaction A <--> 3/2B

K2 = [B]^3/2 / [A]

because the coefficients become the exponents in the K expression.

[Vincent Kim 2I]

The equilibrium constant K only changes when the concentrations of the reactants and products are changed, not when their stoichiometric constants are.