Exposed iron (Fe) metal reduces chlorine disinfectant, making it ineffective in killing bacteria such as E. coli that can be present in untreated water. The number of electrons transferred in this oxidation-reduction reaction is ___, and ___ is the oxidizing agent.
Fe (s) + Cl2 (aq) --> FeCl2 (aq)
| 2, chlorine (Cl2) |
| 1, iron (Fe) |
| 2, iron (Fe) |
| 1, chlorine (Cl2) |
)?