Determination of Calcium Ion Concentration
the concentration in mol L−1 of Ca2+ in your sample solution. 4. Calculate the concentration, in mg/L (parts per million or ppm), of Ca2+ in your sample solution. 5. In the case of a solid sample which has been dissolved in acid, the concentration of Ca2+ in your sample solution may be used to calculate the percentage, by weight, of CaCO 3
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