Sodium Hydrogen Carbonate
Also known as baking soda, it is the primary product obtained during the Solvay process. It can also be produced by passing carbon dioxide through a cold and concentrated solution of sodium carbonate.
Na2CO3 + CO2 + H2O 2NaHCO3
Sodium hydrogen carbonate is less acidic than sodium carbonate and is used as a medicine to cure acidity in the stomach. It is also used in effervescent drinks, as a constituent in baking powder and as a mild antiseptic for skin infections