Sodium bicarbonate NaHCO3 (Backing
soda):
Sodium hydrogen carbonate or sodium bicarbonate is used in
backing cakes pastries etc. It is called so because it decomposes on heating to
generate bubbles of carbon dioxide, leaving holes in cakes or pastries and
making them light and fluffy. This compound is prepared by saturating a solution
of sodium carbonate with carbon dioxide. The white crystalline powder of sodium
bicarbonate, being less soluble, precipitated out.
·
Primarily used as an ingredient in backing.
·
Sodium hydrogen carbonate is a mild antiseptic for skin
infections.
·
It is also used in fire extinguishers.
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