0.257600 grams was dissolved in acid and was diIuted to 250mL. From the sample, 100mL aliquot was obtained and was titrated with 0.02542 M EDTA. 63.250 mL was the endpoint. Another 100mL aliquot with a compound that can mask Cu. It underwent titration with 0.02542 M EDTA and its endpoint is 18.15 mL. Question. Determine the number of moles of Cu and number of moles of Zn in the sample. Find the % composition of each (Cu and Zn) in brass.
0.257600 grams was dissolved in acid and was diIuted to 250mL. From the sample, 100mL aliquot was obtained and was titrated with 0.02542 M EDTA. 63.250 mL was the endpoint. Another 100mL aliquot with a compound that can mask Cu. It underwent titration with 0.02542 M EDTA and its endpoint is 18.15 mL. Question. Determine the number of moles of Cu and number of moles of Zn in the sample. Find the % composition of each (Cu and Zn) in brass.
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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A sample of brass weighing 0.257600 grams was dissolved in acid and was diIuted to 250mL. From the sample, 100mL aliquot was obtained and was titrated with 0.02542 M EDTA. 63.250 mL was the endpoint.
Another 100mL aliquot with a compound that can mask Cu. It underwent titration with 0.02542 M EDTA and its endpoint is 18.15 mL.
Question.
- Determine the number of moles of Cu and number of moles of Zn in the sample.
- Find the % composition of each (Cu and Zn) in brass.
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