Question

Molecular weight of mohr's salt is 392. Its equivalent weight when it is oxidised by kmno4 in acidic medium is

Answer 1

Answer:

Formula

(NH₄)₂Fe (SO₄).6H₂O

the only oxidisable atom here is Fe in its +2 oxidation state .

Therefore whole of the molecule when oxidised will need to to release only one electron (by Fe 2+)

Therfore it's equivalent weight is 392/1

392