Potassium dichromate, iron(II) sulfate, and sulfuric acid (K2Cr2O7 FeSO4 H2SO4) are accessible in nearly every chemical laboratory worldwide. In the acidic medium, K2Cr2O7 and FeSO4 … Continue reading K2Cr2O7 + FeSO4 + H2SO4 = Cr2(SO4)3 + Fe2(SO4)3 + K2SO4 + H2O