Question

Consider the following unbalanced redox reaction:

MnO4- (aq) + SbH3 (aq) ---> MnO2 (s) + Sb (s)

What is the oxidizing agent in the reaction?

A.) MnO4-

B.) SbH3

C.) MnO2

D.) Sb

Help please?

Answer 1

You're oxidising agent will be reduced. In the molecule MnO4-, Mn has and oxidation number of +9 and in MnO2 it is +4, therefore its oxidation number has reduced, therefore Mn is reduced, therefore it is the oxidant/oxidising agent.