Question

If the molecular weight of BA mno4 taken twice is M when the equivalent weight of BA mno4 taken twice in acidic medium is

Answer 1

Answer:

Ba(MnO4)2⟶Ba2++2MnO4−

                                                    ↓

                                                 2Mn2+

Ba being most electro positive element does not get reduced to Ba, thus only MnO4− gets reduced to Mn2+ as it always does in acidic medium.

And since compound has 2 atoms of Mn in it so, its' n factor is given by,

(Change in oxidation number per atom)×(Number of atoms per molecule or formula unit of the given reagent)

=5×2=10