Determination of equilibrium constants

Equilibrium constants are determined in order to quantify chemical equilibria. When an equilibrium constant K is expressed as a concentration quotient, K = [ S ] σ [ T ] τ ⋯ [ A ] α [ B ] β ⋯ {\displaystyle K={\frac {\mathrm {[S]} ^{\sigma }\mathrm {[T]} ^{\tau }\cdots }{\mathrm {[A]} ^{\alpha }\mathrm {[B]} ^{\beta }\cdots }}} it is implied that the activity quotient is constant.

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