Redox

[nautica]

Check this

Balance in an acidic solution

Fe2+ + MnO4- ----- Fe3+ + Mn2+

(Fe2+ ---- Fe3+ + 1e-) x 7
7e- + 8H+ + MnO4- ----- Mn + 4H2O

8H+ + 7Fe2+ + MnO4- ----- 7Fe3+ + Mn + 4H2O

Thanks
Nautica

[chem_tr]

I have not gone deep in your post; there are two strict ways to check if a redox reaction is okay or not:


Check for a balance for atoms in two sides.
Check for a balance for ions (electron count) in two sides


If they are okay, your reaction is correct.