EquilibriumSolver Calculate

Solve chemical equilibrium problems: simple Ksp dissolution, Ksp with complex formation (amphoterism), and common-ion effect. Uses numerical methods (Newton's method for complex systems, bisection for common-ion). Handles the full charge-balance equation for Ksp+Kf systems. Use for: solubility calculations, Ksp problems, common-ion effect, complex formation equilibria, amphoteric dissolution.