The most commonly used chlorates in pyrotechnics, potassium and barium chlorate, can both be made in this manner. The preparation of sodium chlorate is quite simple, Chlorine gas (Cl 2) is stored at the anode while hydrogen gas (H 2) is stored at the cathode. Chlorine is then hydrolyzed in the cell to a hypochlorite anion group which at that point produces sodium chlorate. Sodium chlorate is easily converted to a number of other chlorates by metathesis reactions. Sodium Chlorate determination using Fe 2+ /MnO 4-system. Sodium chlorate particles are … However, the sodium chlorate produced during the reaction can be used to make potassium chlorate instead if concentrated potassium chloride solution is added to the boiled-down bleach. Titration for solid sample A solution of Ferrous Sulphate in water + acid (acid Ferrous Sulphate solution) is made up by dissolving 7.0 grams of Ferrous Sulphate Heptahydrate (3.83g Anhydrous FS) in 80ml freshly boiled distilled water + 5ml concentrated Sulphuric acid (add acid to water first). This will cause potassium chlorate, which has a much lower solubility, to crystallize and fall out of solution.