A 50.0 mL sample containing Cd2+ and Mn2+ was treated with 48.2 mL of 0.0600 M EDTA. Titration of the excess unreacted EDTA required 16.6 mL of 0.0270 M Ca2+. The Cd²+ was displaced from EDTA by the addition of an excess of CN. Titration of the newly freed EDTA required 25.6 mL of 0.0270 M Ca2+. What are the concentrations of Cd2+ and Mn2+ in the original solution?

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C12-5 Whats the second concentration?
A 50.0 mL sample containing Cd2+ and Mn2+ was treated with 48.2 mL of 0.0600 M EDTA. Titration of the excess unreacted
EDTA required 16.6 mL of 0.0270 M Ca2+. The Cd2+ was displaced from EDTA by the addition of an excess of CN.
Titration of the newly freed EDTA required 25.6 mL of 0.0270 M Ca2+. What are the concentrations of Cd2+ and Mn2+ in the
original solution?
concentration: 0.035
M Mn2+
concentration:
0.0013
M Cd2+
Incorrect
Transcribed Image Text:A 50.0 mL sample containing Cd2+ and Mn2+ was treated with 48.2 mL of 0.0600 M EDTA. Titration of the excess unreacted EDTA required 16.6 mL of 0.0270 M Ca2+. The Cd2+ was displaced from EDTA by the addition of an excess of CN. Titration of the newly freed EDTA required 25.6 mL of 0.0270 M Ca2+. What are the concentrations of Cd2+ and Mn2+ in the original solution? concentration: 0.035 M Mn2+ concentration: 0.0013 M Cd2+ Incorrect
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