This EDTA solution is used to analyze a piece of 0.0630 g of metal alloy containing Sn and Cu that is dissolved in HNO3 to make a 250-mL working solution. An aliquot of 25.0 mL of the working solution requires 15.66 mL to titrate only the Sn when sodium thiosulfate is used to block the Cu. A fresh aliquot of 25.0 mL of this working solution requires 24.60 mL of EDTA to titrate both metal ions. Determine the initial mass percent (m%) of the metal alloy. (Atomic mass for Cu = 63.5 g/mol; Sn = 118.7 g/mol) {
This EDTA solution is used to analyze a piece of 0.0630 g of metal alloy containing Sn and Cu that is dissolved in HNO3 to make a 250-mL working solution. An aliquot of 25.0 mL of the working solution requires 15.66 mL to titrate only the Sn when sodium thiosulfate is used to block the Cu. A fresh aliquot of 25.0 mL of this working solution requires 24.60 mL of EDTA to titrate both metal ions. Determine the initial mass percent (m%) of the metal alloy. (Atomic mass for Cu = 63.5 g/mol; Sn = 118.7 g/mol) {
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The concentration of EDTA is 2.497mM
Transcribed Image Text:This EDTA solution is used to analyze a piece of 0.0630 g of metal alloy containing Sn and Cu
that is dissolved in HNO3 to make a 250-mL working solution. An aliquot of 25.0 mL of the
working solution requires 15.66 mL to titrate only the Sn when sodium thiosulfate is used to
block the Cu. A fresh aliquot of 25.0 mL of this working solution requires 24.60 mL of EDTA to
titrate both metal ions. Determine the initial mass percent (m%) of the metal alloy. (Atomic mass
for Cu = 63.5 g/mol; Sn = 118.7 g/mol)
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