Name the gas which is evolved on heating baking soda.


When heated, baking soda gradually decomposes to form sodium carbonate, water along with the evolution of carbon dioxide gas.

Baking soda

Baking soda is a white crystalline compound with a slightly salty taste. Its chemical formula is NaHCO3and is generally known as sodium bicarbonate.

Above 60oC, baking soda gradually decomposes into sodium carbonate, water and carbon dioxide.

NaHCO3 → Na2CO+ CO+ H2O

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