K2CrO4 + 4H2SO4 + 2KCl CrO2Cl2 + 4KHSO4 + 2H2O
Potassium chromate react with sulfuric acid and potassium chloride to produce chromyl chloride, potassium bisulfate and water. Sulfuric acid anhydrous. This reaction takes place at a temperature of 30-50°C.