Write the chemical equations of the reactions occurring when carbon dioxide(CO 2 ) is captured by water

The capture of carbon dioxide (CO2) by water (H2O) can be represented by the following chemical reactions:

1. The first step is the dissolution of CO2 in water:

   CO2(g) ↔ CO2(aq)

2. The dissolved CO2 then reacts with water to form carbonic acid (H2CO3):

   CO2(aq) + H2O(l) ↔ H2CO3(aq)

3. Carbonic acid is a weak acid and partially ionizes in water to form bicarbonate ions (HCO3-) and hydrogen ions (H+):

   H2CO3(aq) ↔ HCO3-(aq) + H+(aq)

4. Bicarbonate ions can further ionize to form carbonate ions (CO3 2-) and additional hydrogen ions:

   HCO3-(aq) ↔ CO3 2-(aq) + H+(aq)

These reactions together represent the process of carbon dioxide capture by water.