SO Ive been trying to figure this out for many hours now and am very irritated. I understand the 2 half reaction way and if many things in the eqaution then the reox ones (elements that change charge way) but I cant get this one:
Cr2O7 (charge of 2-) + SO3 (charge of 2-) ---> Cr3+ + SO4 (charge of 2-)
please help and if you can explain more about this difficult topic that would be great. thanks!