Question

Balance The following reactions by half reaction method also identify oxidising agent and reducing agent
(I) cr2o72- + so2 gives cr3+ + so42-
(Ii) MnO4- + Fe2+ gives Fe3+ + Mn2+

Answer 1

Answer:

ExplanThe reaction we are given here to Balance gives cr_{3}+ +  is basically an example or a type of redox reaction.

In other words we can say there are two types of half reactions that has been taking place in the above given reaction one that has oxidation happening in it and other half has reduction happening in it.

 

1. Cr2o7-$cr_{2} } o_{7} x^{2-} +14 H_{2} o + 6e^{-} -> 2cr_{3} +7 h_{2}0+ 14 OH^{-}$²