The Complex Species node is available when at least one species node (with the Immobile species checkbox cleared) has been added to the Electrolyte node. The node can be used to model any complex formed by the available species in the aqueous electrolyte.

Set the Diffusion coefficient, D, (default is 10−9 m2/s) of the complex species and the Equilibrium constant, Keq, (default is 1) for the reaction forming the complex.

In the Stoichiometric Coefficients section select the checkboxes of the species forming the complex and set the stoichiometric coefficients (default is zero). Only values lower than or equal to zero are allowed.