Jessica F.

asked • 10/09/19

How to find Mg of a substance using molarity

Calcium levels in blood can be determined by adding oxalate ion to precipitate calcium oxalate, CaC2O4, followed by dissolving the precipitate in aqueous acid and titrating the resulting oxalic acid (H2C2O4) with KMnO4:5H2C2O4(aq)+2MnO−4(aq)+6H+(aq)→10CO2(g)+2Mn2+(aq)+8H2O(l).

How many milligrams of Ca2+ are present in 11.0 mL of blood if 23.78 mL of 9.02×10−4 M KMnO4 solution is needed for the titration?

1 Expert Answer


Suzanne K. answered • 10/10/19

New to Wyzant

Experienced High school and community college chemistry teacher

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