Henry’s Law CO2 Dissolution

The first move of carbonation: any partial pressure of carbon dioxide in the air over water drives some gas into solution. Higher CO2 pressure drives more gas in (lowering pH); warming or stripping drives it out (raising pH).

$$\mathrm{C}{\mathrm{O}}_2(\mathrm{g})\rightleftharpoons \mathrm{C}{\mathrm{O}}_2(\mathrm{aq})$$

Variables

Symbol	Meaning	Unit
$C{O}_2(g)$	gaseous carbon dioxide above the water
$C{O}_2(aq)$	dissolved carbon dioxide

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Part of The Blueprint of Water