11. Solution of calcium and magnesium salts 100.0 ml. 18.45 ml of 0.01020M EDTA was used to titrate a 20.00 ml aliquot with Eriochrome Black T, and 8.22 ml of EDTA was used to titrate the same aliquot with murexide. What mass of Ca and Mg was contained in the initial solution? Answer. 0.0168 g Ca; 0.0127 g Mg.

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