Give preparation of Potassium Permanganate `(KMnO_4)`.

Give the preparation of Potassium Permanganate from Pyrolusite ore.

Describe the preparation of potassium permanganate. How does the acidified permanganate solution react with (i) iron(II) ions Write the ionic equations for the reactions

Give the oxidation reaction of alkenes with : cold dilute potassium permanganate (KMnO_4)

Give the oxidation reaction of alkenes with : hot potassium permanganate solution ( KMnO_4 )

What is the oxidation number of Mn in Potassium Permanganate ?

Describe the preparation of potassium dichromate from iron chromite ore. What is the effect of increasing pH on a solution of potassium dichromate?