Chemistry — Carbonate Buffering

\text{CaCO}_3 \rightleftharpoons \text{Ca}^{2+} + \text{CO}_3^{2-}

K_{sp} = [\text{Ca}^{2+}][\text{CO}_3^{2-}]

\text{buffers ocean and blood pH}

\text{shifts with } P_{CO_2}