Sodium hydrogen carbonate is made by saturating a solution of sodium carbonate with carbon dioxide. The white crystalline powder of sodium hydrogen carbonate, being less soluble, get separated out.
This compound is also known as baking soda.
Properties :
On heating, it gives Na2CO3 and CO2
Uses :
i) It is used in the fire extinguisher.
ii) It is used as a constituent of baking powder.
iii) In medicine to minimize the acidity of stomach (antacid).
iv) Baking powder is a mixture of starch, sodium hydrogen carbonate and potassium hydrogen tarteate.