Question

Name the gas which is evolved on heating baking soda.

Answer 1

The gas evolved on heating baking soda:

• Sodium bicarbonate or Baking soda is basically a white strong compound that is translucent in nature but it regularly shows up as a fine powder.
• It has the chemical formula as ${\mathrm{NaHCO}}_3$ and is chemically named as Sodium bicarbonate.
• Above $60°\mathrm{C}$, the Baking soda basically decomposes to form Sodium carbonate, water, and Carbon dioxide as the products.
• The reaction for this can be given as :
  $\underset{\left(\mathrm{Sodium}\mathrm{bicarbonate}\right)}{2\mathrm{NaHC}{\mathrm{O}}_3\left(\mathrm{s}\right)}\stackrel{>80°c}{\to }\underset{\left(\mathrm{Sodium}\mathrm{carbonate}\right)}{\mathrm{N}{\mathrm{a}}_2\mathrm{C}{\mathrm{O}}_3\left(\mathrm{s}\right)}+\underset{\left(\mathrm{Water}\right)}{{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)}+\underset{\left(\mathrm{Carbon}\mathrm{dioxide}\right)}{\mathrm{C}{\mathrm{O}}_2\left(\mathrm{g}\right)}$

Therefore, Carbon dioxide gas is known as the gas to be evolved on heating baking soda.