Calcium oxalate, Sulfuric Acid and Potassium Permanganate (CaSO4 H2SO4 KMnO4) are very common chemicals all around the world. These three chemicals react with each other. The reaction is called the Redox reaction. Mainly the CaC2O4 and KMnO4 react with each other while the sulfuric acid just creates the acidic environment.
About Calcium Oxalate, Sulfuric Acid and Potassium Permanganate (CaC2O4 H2SO4 KMnO4)
Calcium oxalate is a salt of calcium with the chemical formula CaC₂O₄.
On the other hand Diluted Sulfuric acid is a mineral acid. It is a colorless, odorless, and syrupy liquid that is soluble in water. The Diluted Sulfuric Acid acts only as an acid in this chemical reaction.
Potassium Permanganate is a purple color reagent having the chemical formula KMnO4
Balancing the equation of the reaction:
After balancing the reaction equation among CaC2O4 H2SO4 KMnO4 of the reaction-
5CaC2O4 + 2KMnO4 + 8H2SO4 = K2SO4 + 5CaSO4 + 2MnSO4 + 10CO2 + 8H2O
Oxidizing agent: CaC2O4
Reducing agent: KMnO4 or, MnO4 -1
Oxidation Half Reaction: CaC2O4 release two electrons and formed the carbon dioxide.
CaC2O4 – 2e = Ca2+ + 2CO2 … … … … … … … .. (i)
Reduction Half Reaction: Mn+7 accepts 5 electrons and become Mn2+ ion.
MnO4 -1 + 5e + 8H+ = Mn2- + 4H2O … …. …. …. (ii)
equation (i)x5 + (ii)x2,
5CaC2O4 – 10e = 5Ca2+ +10CO2
2MnO4 -1 +10e + 16H+ = 2Mn2- + 8H2O
5CaC2O4 + 2MnO4 -1 + 16H+ = 5Ca2+ + 2Mn2- + 8H2O + 10CO2
adding necessary ions and radicals we get,
5CaC2O4 + 2KMnO4 + 8H2SO4 = K2SO4 + 5CaSO4 + 2MnSO4 + 8H2O + 10CO2
Click to readily understand ion-electron balancing redox reaction-