Sodium chloride solution can be used to regenerate an ion exchange column . Sodium Carbonate , Na 2 CO 3 . Sodium Hydrogen Carbonate , NaH CO 3 . Called ' bicarb ', is used in cooking as a raising agent . Baking powder is a mixture of sodium hydrogen carbonate and tartaric acid , to keep the pH neutral .
Sodium hydroxide is used in the manufacture of paper , soap and ceramics .
Potassium Iodide , K I .