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A groundwater has a pH of 8.4 and an alkalinity of 72 mg/L as CaCO3. The water is not initially equilibrated with the atmosphere. Determine

A groundwater has a pH of 8.4 and an alkalinity of 72 mg/L as CaCO3. The water is not initially equilibrated with the atmosphere. Determine the alkalinity and pH of the water from part when 3x10-4 M HCl is added and allowed to equilibrate. Assume that the re-equilibration is rapid and total dissolved carbonate remains unchanged.

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