Explain titration of the excess unreacted edta required

Reference no: EM13210818

A 50.0 mL sample containing Cd2 and Mn2 was treated with 65.7 mL of 0.0700 M EDTA. Titration of the excess unreacted EDTA required 15.9 mL of 0.0220 M Ca2 . The Cd2 was displaced from EDTA by the addition of an excess of CN-. Titration of the newly freed EDTA required 16.5 mL of 0.0220 M Ca2 . What were the molarities of Cd2 and Mn2 in the original solution?

Reference no: EM13210818

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