In acidic medium KMnO4 oxidises oxalic acid to CO2.the catalyst in the reaction is?

In acidic medium, KMnO_4 oxidises FeSO_4 solution. Which of the following statements is correct?

When KMnO_4 solution is added to oxalic acid solution, the decolourisation is slow in the beginning but becomes instantaneous after some time because

KMnO_4 is prepared from the mineral pyrolusite, MnO_2 (deep purple colour). It acts as an oxidising agent in the neutral, alkaline as well as acidic medium in acidic medium it is used in volumetric analysis for estimation of Fe^(2+) , Cr_2O_4^(2-) salts etc. The titrations are carried out in presence of H_2SO_4 . However, before using it as a titrant, it is first standardised with standard oxalic acid solution or Mohr's salt solution . In one of the experiments on titration 26.8g of dry pure sodium oxalate (Mw=123gmol^-1) was dissolved in 1L of distilled water and then 100 mL of 2MH_2SO_4 were added. The solution was cooled. Now to this solution 0.1MKMnO_4 solution was added till a very faint pink colour persisted. Q. The purple colour of KMnO_4 is due to

Assertion : KMNO_4 acts as an oxidising agent in acidic, basic or neutral medium. KMnO_4 oxidises ferrous sulphate to ferric sulphate.

10 g of oxalate was dissolved in 300 mL of solution. This solution required 250 mL of (M/10)KMnO_(4) in acidic medium for complete oxidation. The percentage purity of oxalate ion in the salt is :

In acidic medium moles of KMnO_4 required to oxidise 1.5 moles of Cu_2S will be :-

Explain why does colour of KMnO_(4) disappear when oxalic acid is added to its solution in acidic medium?

Explain why does colour of KMnO_(4) disappear when oxalic acid is added to its solution in acidic medium?

KMnO_(4) acts as an oxidising agent in acidic medium. The number of moles of KMnO_(4) that will be needed to react with one mole of sulphide ions in acidic solution is

KMnO_(4) acts as an oxidising agent in acidic medium. The number of moles of KMnO_(4) that will be needed to react with one mole of sulphide ions in acidic solution is