A #21.8*mL# volume of #"potassium permanganate"# whose concentration was #1.68*mol*L^-1# achieved a stoichiometric endpoint when a volume of #100*mL# #H_2O_2(aq)# solution was added. What are #[H_2O_2]#, and the mass of hydrogen peroxide used?
Hydrogen peroxide will reduce permanganate ion in aqueous solution.
I am not going to go thru the derivation of this redox equation. Suffice to say it is balanced, and represents the reduction of permanganate by peroxide in acidic solution. The important thing to know in this rxn is that permanganate ion is VERY strongly coloured; it is a deep red/purple colour.
And given the stoichiometry, there were thus
Thx to dk who pointed out an error.