Anode	$Fe\left(s\right)\to 4F{e}^{2+}\left(aq\right)+2e^{-}$	(1)
At alkaline condition	$F{e}^{2+}+2O{H}^{-}\to Fe{\left(OH\right)}^2$	(2)
At acidic condition	$4F{e}^{2+}+O_2+2H_{2}O\to 4F{e}^{3+}+4O{H}^{-}$	(3)
Cathode	$2H_{2}O+2e^{-}\to H_2+2O{H}^{-}$	(4)