Answer :

We have the reaction: CO2 + H2O (yield arrow)> H2CO3. It means that carbon dioxide + water makes H2CO3 or Carbonic Acid. This reaction is also reversible, so H2CO3 (yield arrow)> CO2 + H2O. This reversible reaction gives a name to reaction: Carbonic anhydrase. It means that it removes the water molecul from Carbonic Acid. Answer: This is a reversible reaction : Carbonic anhydrase.

The type of chemical reaction in

H2CO3 → H2O+ CO2 is decomposition reaction

Decomposition reaction is a reaction which involve the breakdown of a single compound into two or more elements or compounds. The reaction above is a decomposition reaction because H2CO3 decomposes to yield CO2 and H2O