Chemistry · Redox Chemistry & Diagrams · Free Energy & Chemical Equilibrium
Problem
Paragraph II: When potassium iodide is added to an aqueous solution of potassium ferricyanide, a reversible reaction is observed in which a complex P is formed. In a strong acidic medium, the equilibrium shifts completely towards P. Addition of zinc chloride to P in a slightly acidic medium results in a sparingly soluble complex Q. The number of moles of potassium iodide required to produce two moles of P is _____.