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<p>the air-sea interface. Based on Henry's Law, the amount of dissolved CO<sub>2</sub> in an aqueous solution is directly proportional to the partial pressure of CO<sub>2</sub> in the atmosphere. To maintain equilibrium, a state of high atmospheric partial pressure of CO<sub>2</sub> leads to an increased oceanic exchange of this gas by molecular diffusion.  In the surface waters, dissolved atmospheric carbon dioxide (CO<sub>2(aq)</sub>) reacts with water molecules to form carbonic acid (H<sub>2</sub>CO<sub>3</sub>), a weak diprotic acid. Diprotic</p><p>
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