The reaction between iodine I2 and iodide ion I- in a solution of potassium iodide KI can be represented as follows:I2 + 2I- 2KITo determine the equilibrium constant Kc for this reaction, we need to know the equilibrium concentrations of the reactants and products. However, you have not provided any specific concentration values for the reactants and products in this reaction.If you can provide the equilibrium concentrations of I2, I-, and KI, I can help you calculate the equilibrium constant Kc for this reaction.