Assume river water is in equilibrium with atmospheric CO 2(g) . Use 0.

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.