uses of sodium hydrogen carbonate

1. Baking powder is a mixture of baking soda & a mild edible acid such as tartaric acid.when baking powder is heated or mixed in water,the following reaction takes place.
Nahco3+CO2+h2o+ sodium salt of acid.
Carbon dioxide produced during the reaction causes bread or cake to rise making them soft & spongy .
2.sodium hydrogen carbonate is also an ingredient in antacids.being alkaline,it neutralizes excess acid in the stomach & provides relief.
3.it is also used as soda - acid in figure extinguishers.
4.it acids as mild antiseptic

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