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A 50 mL sample containing Cd2+ and Mn2+ was treated with 64.3 mL of 0.06 M...

A 50 mL sample containing Cd2+ and Mn2+ was treated with 64.3 mL of 0.06 M EDTA. Titration of the excess unreacted EDTA required 12.2 mL of 0.019 M Ca2+. The Cd2+ was displaced from EDTA by the addition of an excess of CN-. Titration of the newly freed EDTA required 28.3 mL of 0.019 M Ca2+.

What were the molarities of Cd2+ and Mn2+ inthe original solution

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