What is the equilibrium constant for the reaction of fe3 and scn?

The equilibrium constant (K) for the reaction between ferric ions (Fe³⁺) and thiocyanate ions (SCN⁻) to form the complex ion [Fe(SCN)]²⁺ is typically expressed as K = [Fe(SCN)²⁺] / ([Fe³⁺][SCN⁻]). The exact value of K varies depending on the temperature and the specific conditions of the reaction. In a typical aqueous solution at room temperature, K can be around 10² to 10³, indicating a strong tendency to form the complex. For precise values, refer to specific chemical databases or literature.