Carbon Dioxide and Sulfur Dioxide – Their Reactions With Water
| Carbon Dioxide | Carbonic acid is produced when carbon dioxide reacts with water. It is a weak acid. This reaction can be reversed by simply heating or boiling the acid. | CO2(aq) + H2O(l) ⇌ H+(aq) + HCO3–(aq)
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| Sulphur Dioxide | Sulfur dioxide reacts with water to form a weak acid known as sulfurous acid, | H2O(l) + SO2(g) -> H2SO3(aq) |