PROBLEM: To measure the Ca2+ concentration in human blood, 1.00 mL of blood was treated with Na₂C2O4 solution to precipitate the Ca²+ as CaC₂O4. The precipitate was filtered and dissolved in dilute H₂SO4 to release C₂O42, which was titrated with KMnO4 solution. The solution required 2.05mL of 4.88x10-4 M KMnO4 to reach the end point. The balanced equation is 2 KMnO4 (aq) + 5 CaC₂O4 (s) + 8 H₂SO4 (aq) → 2 MnSO4 (aq) + K₂SO4 (aq) + 5 CaSO4 (s) + 10 CO₂ (g) + 8 H₂O (1)
PROBLEM: To measure the Ca2+ concentration in human blood, 1.00 mL of blood was treated with Na₂C2O4 solution to precipitate the Ca²+ as CaC₂O4. The precipitate was filtered and dissolved in dilute H₂SO4 to release C₂O42, which was titrated with KMnO4 solution. The solution required 2.05mL of 4.88x10-4 M KMnO4 to reach the end point. The balanced equation is 2 KMnO4 (aq) + 5 CaC₂O4 (s) + 8 H₂SO4 (aq) → 2 MnSO4 (aq) + K₂SO4 (aq) + 5 CaSO4 (s) + 10 CO₂ (g) + 8 H₂O (1)
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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PROBLEM: To measure the Ca2+ concentration in human blood, 1.00 mL of blood was treated with Na₂C2O4 solution to precipitate the Ca²+ as CaC₂O4. The precipitate was filtered and dissolved in dilute H₂SO4 to release C₂O42, which was titrated with KMnO4 solution. The solution required 2.05mL of 4.88x10-4 M KMnO4 to reach the end point. The balanced equation is 2 KMnO4 (aq) + 5 CaC₂O4 (s) + 8 H₂SO4 (aq) → 2 MnSO4 (aq) + K₂SO4 (aq) + 5 CaSO4 (s) + 10 CO₂ (g) + 8 H₂O (1)
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