Calcium oxalate (CaC2O4) is insoluble in water. For this reason it can be used to determine the amount of Ca+2 ions in fluids such as blood. The calcium oxalate isolated from blood is dissolved in acid and titrated against standardized KMnO4 as shown in the redox reaction below:
MnO4- + C2O42- → Mn2+ + CO2 (unbalanced)
In one test it is found that the calcium oxalate isolated from a 10.0mL sample of blood requires 24.2 mL of 9.56 × 10-4 M KMnO4 to reach the endpoint. Calculate the number of mg of calcium per mL of blood.
MnO4- + C2O42- → Mn2+ + CO2 (unbalanced)
In one test it is found that the calcium oxalate isolated from a 10.0mL sample of blood requires 24.2 mL of 9.56 × 10-4 M KMnO4 to reach the endpoint. Calculate the number of mg of calcium per mL of blood.