The cadmium and lead ions in a 50.00 mL sample required 40.09 mL of a 0.005000 M EDTA for titration. A 75.00 mL portion of the same sample was made basic and treated with excess KCN masking the cadmium as Cd(CN)42-. This solution required 21.42 mL of the EDTA for titration. Calculate the concentration of Cd2+ and Pb2+ in the sample ppm and in M.
The cadmium and lead ions in a 50.00 mL sample required 40.09 mL of a 0.005000 M EDTA for titration. A 75.00 mL portion of the same sample was made basic and treated with excess KCN masking the cadmium as Cd(CN)42-. This solution required 21.42 mL of the EDTA for titration. Calculate the concentration of Cd2+ and Pb2+ in the sample ppm and in M.
Chapter17: Complexation And Precipitation Reactions And Titrations
Section: Chapter Questions
Problem 17.33QAP
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The cadmium and lead ions in a 50.00 mL sample required 40.09 mL of a 0.005000 M EDTA for titration. A 75.00 mL portion of the same sample was made basic and treated with excess KCN masking the cadmium as Cd(CN)42-. This solution required 21.42 mL of the EDTA for titration. Calculate the concentration of Cd2+ and Pb2+ in the sample ppm and in M.
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