Assume river water is in equilibrium with atmospheric CO

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Assume river water is in equilibrium with atmospheric CO

Assume river water is in equilibrium with atmospheric CO2(g). Use 0.034 mol L−1 bar−1 for the Henry’s law constant of CO2 and assume that the atmospheric partial pressure of CO2 is 408 ppmv, and that the atmospheric pressure is 1.01 bar. For H2CO3, Ka1 = 4.45 × 10-7 and Ka2 = 4.69 × 10-11.
(a) Calculate [H2CO3(aq)].
(b) Calculate the pH.
(c) Calculate the fractions of H2CO3(aq), HCO3-(aq) and CO32-(aq).
(d) Calculate the concentrations of HCO3-(aq) and CO32-(aq).
(e) Calculate the alkalinity.

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