Sometimes the full equation of a reaction and the net ionic equation balance out differently. If that is the case, which is the correct one to use?
For instance, in the reaction between a solution of iron(III) chloride and lead(II) nitrate, you get the following for the complete equation:
2FeCl3 + 3Pb(NO3)2 → 3PbCl2 + 2Fe(NO3)2
However, when you use the net ionic equation, you get
6Cl- + 3Pb(2+) → 3PbCl2
However, this can be reduced to
2Cl- + Pb(2+) → PbCl2
This doesn't match with the complete equation.
If the net ionic equation does not match the complete equation, which one should you use? Or is it ok to use both?