In presence of dil`H_(2).SO_(4)` decolourization of `KMnO_(4)` with evolution of `CO_(2)` indicates the presence of .............or .....

Which basic radical(s) decolourize acidic KMnO_(4) ?

Titration of KMnO_4 in acidic medium is not satisfactory in presence of

In presence of alkali, purple colour of KMnO_4 changes to ul"yellow. "

On adding KMnO_(4) to cold conc. H_(2)SO_(4), it gives

In electrolysis of dil. H_(2) SO_(4) using platinum electrodes:

When a salt is heated with dil H_(2)SO_(4) and KMnO_(4) solution the pink colour of KMnO_(4) is dicharged, the mixture may contain

When a salt is heated with dilute H_(2)SO_(4) " and " KMnO_(4) solution, the pink colour of KMnO_(4) is discharged, the salt is :

H_(2) O_(2) solution (20 mL) reacts quantitatively with a solution of KMnO_(4) (20 mL) acidified with dilute H_(2) SO_(4) . The same volume of the KMnO_(4) solution is just decolourised by 10 mL of MnSO_(4) in neutral medium. simulataneously forming a dark brown precipitate of hydrated MnO_(2) . The brown precipitate is dissolved in 10 mL of 0.2 M sodium oxalate under boiling condition in the presence of dilute H_(2) SO_(4) . Write the balanced equations involved in the reactions and calculate the molarity of H_(2) O_(2) solution.

Fenton's reagent is X+ H_(2)O_(2) . X combines readily with Y and H_(2)O to form crystals of Mohrs salt. X can be made in laboratory from Kipp's waste is heated in the presence of O_(2) and water, Z is also produced along with X. the reaction of X with KMnO_(4) in the presence of H_(2)SO_(4) also gives Z. Identify the correct match.

Write the balanced reaction of titration of KMnO_(4) Vs oxalic acid in presence of H_(2)SO_(4) .