The equation 2KMnO4 + 5H2C2O4 -> 2K2C2O4 + 2Mn2(SO4)3 + 4H2O + 2CO2

1. Detailed information about the equation 2KMnO₄ + 5H₂C₂O₄ -> 2K₂C₂O₄ + 2Mn₂(SO₄)₃ + 4H₂O + 2CO₂:

The above equation describes the reaction between potassium permanganate (KMnO₄) and oxalic acid (H₂C₂O₄), producing potassium oxalate (K₂C₂O₄), manganese (III) sulphate (Mn₂(SO₄)₃), water (H₂O) and carbon dioxide gas (CO₂).

2. Reaction conditions:

The reaction takes place in an acidic environment.

3. Reaction process:

In this reaction, potassium permanganate is reduced from oxidation state +7 to +3 (to form manganese (III) sulphate), while oxalic acid is oxidized from oxidation state +3 to +4 (to form carbon dioxide).

4. Phenomena occur:

When the reaction occurs, the distinctive purple color of potassium permanganate will gradually disappear, turning pink due to the formation of Mn₂(SO₄)₃. Meanwhile, CO₂ gas will be released from the solution.