14HCl + K2Cr2O7 3Cl2 + 2CrCl3 + 2KCl + 7H2O
Hydrogen chloride react with potassium dichromate to produce chlorine, chromium(III) chloride, potassium chloride and water. Hydrogen chloride - concentrated solution. This reaction takes place at a temperature of 60-80°C. Laboratory method receiving of chlorine.