CBSE Class 10 Answered
what is sodium bicarbonate ?
Asked by Shriya | 09 Sep, 2015, 06:46: PM
Expert Answer
Chemical formula: NaHCO3
It is produced on a large scale by treating cold and concentrated solution of sodium chloride (brine) with ammonia and carbon dioxide.
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NaCl + H2O + CO2 + NH3 → NH4Cl + NaHCO3 |
On heating sodium hydrogen carbonate solution, it decomposes to give sodium carbonate with the evolution of carbon dioxide.
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2NaHCO3 Na2CO3 + H2O + CO2 |
Uses:
•Used as an antacid to remove acidity of the stomach.
•Used in making baking powder which is used in making cakes, breads, etc.
•On heating or mixing baking powder with water, carbon dioxide is evolved which causes the breads, cakes, etc. to rise, making them soft and spongy.
• NaHCO3 + H+ → CO2 + H2O + Sodium salt of acid
•Used in soda-acid fire extinguishers.
Answered by | 09 Sep, 2015, 06:48: PM
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