Question

A chemistry student is given a solution of iron(III) sulfate and potassium iodide. The student is asked to predict the products and balance the chemical equation for the redox reaction that occurs when the two solutions are mixed. What is the balanced chemical equation for the redox reaction that occurs between iron(III) sulfate and potassium iodide?

Answer 1

When iron III  sulfate  Fe2 SO4 3  reacts with potassium iodide  KI , the products formed are iron II  sulfate  FeSO4 , potassium sulfate  K2SO4 , and iodine  I2 . The balanced chemical equation for the redox reaction is:2 Fe2 SO4 3 + 6 KI  4 FeSO4 + 3 K2SO4 + 3 I2