Question

Balance the following redox reaction by ion – electron method :

Cr2O7

2-

(aq) + SO2 (g)  Cr3+ (aq) + SO4

2-

(aq) (acidic medium)​

Answer 1

Answer:

Half-reaction

oxidation half   

reduction half 

balancing them by multiplying oxidation half by 3 and adding the reaction