Carbon dioxide dissolves in water to form carbonic acid, which is primarily dissolved CO2. Dissolved CO2 satisfies the equilibrium equation

Question

CO2(g) <-=> CO2(aq) K=.032

The acid dissociation constants listed in most standard reference texts for carbonic acid actually apply to dissolved CO2. For a CO2 partial pressure of 2.7×10-4 atm in the atmosphere, what is the pH of water in equilibrium with the atmosphere?

Answer 1

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