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A sample of water at pH 10.5 has 32 mg/L of CO 3 -2 and 22 mg/L of HCO 3 - Including the contribution of

A sample of water at pH 10.5 has 32 mg/L of CO₃^-2 and 22 mg/L of HCO₃^- Including the contribution of [H⁺] and [OH^-], find the alkalinity as CaCO₃.

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