Question

On heating anhydrous $Na_{2}CO_{3}$, ........ is evolved.

• A. $CO_{2}$
• B. Water vapour
• C. $CO$
• D. No gas

Answer 1

Answer: (D)

No gas

Answer 2

Anhydrous form of $Na_{2}CO_{3}$ does not decompose on heating even to redness. It is a amorphous powder called soda ash.