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What are the concentrations of them

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In an alkalinity titration of a 100.0 mL sample of water from a hot spring, 2.56 mL of a 0.0320 M  solution of HCl is needed to reach the first equivalence point (pH = 8.3) and another 10.42 mL is needed to reach the second equivalence point (pH = 4.0). If the alkalinity of the spring water is due only to the presence of carbonate and bicarbonate, what are the concentrations of each of them?

(on a side note what does the equivalence points indicate?)

Reference no: EM132060594

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