1. The problem statement, all variables and given/known data Cl2 -> Cl- + ClO3- (in basic solution) 2. Relevant equations 3. The attempt at a solution Well, I've tried messing around with the half reactions but since Cl2 is involved in both, they don't seem to do much good. e + Cl2 -> Cl- Cl2 -> ClO3- + 5e Normally, I would multiply the top by 5e to let the electrons cancel, but then there's a Cl2 and a 5Cl2 so that doesn't appear to work... Anyone have any ideas on how to do this?