In acidic medium, reaction `MnO_(4)^(-) hArr Mn^(2+)` is an example of -

In acidic medium, the reaction, MnO_4^(1-) rarr Mn^(2+) involves :

In acidic medium MnO_(4)^(2-)

Determine the equivalent weight of the following oxidising and reducing agents : (a) KMnO_(4) (reacting in acidic medium MnO_(4)^(-)rarrMn^(2+) ) (b) KMnO_(4) (reacting in neutral medium MnO_(4)^(-)rarr MnO_(2) )