Write reactions of `KMnO_4`, in acidic meduim with `SO_2`

Write reactions of KMnO_4 , in acidic meduim with FeSO_4

Write reactions of KMnO_4 , in acidic meduim with KNO_2 .

Write reactions of K_2Cr_2O_7 , in acidic medium with FeSO_4

Write reactions of KMnO_4 , in neutral medium with : H_2S

Write reactions of KMnO_4 , in neutral medium with : MnSO_4

Write reactions of KMnO_4 , in neutral medium with : Na_2S_2O_3

Write one oxidising reaction of KMnO_4 in basic medium.

In the titration of Fe^(2+) ions with KMnO_4 in acidic medium, why is dilute H_2SO_4 used and not dilute HCl?

What is the equivalent weight of KMnO_4 in acidic medium is equal to: