Problem- Carbon dioxide dissolves in water to form carbonic acid, which is primarily dissolved CO2. Dissolved CO2 satisfies the equilibrium equation
CO2(g) [double arrow] CO2(aq) K=0.032 M. atm ^-1
The acid dissociation listed in most standard reference texts for carbonic acid actually apply to dissolved CO2. For a CO2 partial pressure of 9.9*10^-4 atm in the atmosphere, what is the ph of water with the atmosphere? For carbonic acid Ka1 = 4.46 x 10-7 , Ka2 = 4.69 x 10-11
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