How Is MnSO4 Oxidized to MnO4- in an Acidic Medium?

[Vavi Ask]

Homework Statement

In the laboratory how is MnSO₄ oxidised to MnO₄^- in an acidic medium?
a. NO₃^-
b. O₂
c. Cr₂O₇^2-
d. S₂O₈^2-
(NB: If I've posted this question in a wrong thread please tell me exactly the right place to post it rather than just deleting it and saying to post it in the right place.)

2. The attempt at a solution
MnSO₄ + NO₃^- →^[O] MnO₄^-

 

[tech99]

Homework Statement

In the laboratory how is MnSO₄ oxidised to MnO₄^- in an acidic medium?
a. NO₃^-
b. O₂
c. Cr₂O₇^2-
d. S₂O₈^2-
(NB: If I've posted this question in a wrong thread please tell me exactly the right place to post it rather than just deleting it and saying to post it in the right place.)

2. The attempt at a solution
MnSO₄ + NO₃^- →^[O] MnO₄^-

What other product do you get from your proposal?