0
Still curious? Ask our experts.
Chat with our AI personalities
Ross
Rafa
Professor
Add your answer:
Earn +20 pts
What is the balanced equation between potassium dichromate and oxalic acid?
The balanced equation between potassium dichromate (K2Cr2O7) and oxalic acid (H2C2O4) is: K2Cr2O7 + 3H2C2O4 -> Cr2(C2O4)3 + 2K2C2O4 + 4H2O
Why potassium permanganate is used as a self indicator in the titration of oxalic acid?
Potassium permanganate is used as a self-indicator in the titration of oxalic acid because the initial pink color of potassium permanganate is decolorized in the presence of oxalic acid due to its reducing properties. The endpoint of the titration is reached when all the oxalic acid has reacted with the potassium permanganate, causing the pink color to persist. This change in color helps in determining the equivalence point of the titration.
What is the reaction between potassium permanganate and sulphuric acid and oxalic acid?
With potassium permanganate and sulfuric acid, a redox reaction occurs where potassium permanganate is reduced to manganese(II) ions and sulfuric acid is oxidized. With oxalic acid, potassium permanganate undergoes a redox reaction where it is reduced to manganese(II) ions and oxalic acid is oxidized to carbon dioxide and water.
Which of the following might you use to titrate an oxalic acid solution?
You could use a standardized solution of potassium permanganate (KMnO4) to titrate an oxalic acid solution. Potassium permanganate is a strong oxidizing agent that reacts with oxalic acid in an acidic medium, forming carbon dioxide gas, manganese dioxide, and water.
What happens when potassium permanganate is standardized with ethanedioic acid?
When potassium permanganate is standardized with ethanedioic acid (oxalic acid), the balanced chemical equation is KMnO4 + 5(C2O4^2-) + 16H+ → 2Mn^2+ + 10CO2 + 8H2O. The reaction is used to determine the precise concentration of the potassium permanganate solution. The reaction reaches a color change endpoint when all of the oxalic acid has reacted with the permanganate, allowing for calculation of the exact concentration of the KMnO4 solution.
