Answer:
H₂CO₃ (aq) ⇒ H₂O (l) + CO₂ (g)
Explanation:
Carbonic acid dissociates into water and carbon dioxide which is gas which is used as a fire extinguisher and also which is identified after expose to the flaming and glowing splints. It is a colorless gas which can be identified by brisk effervescence seen in the tube.
The balanced reaction of the decomposition of carbonic acid is:
H₂CO₃ (aq) ⇒ H₂O (l) + CO₂ (g)