4 Fe(2+) + O2 + 6 H2O => 4 iron(III) oxide-hydroxide + 12 H(+)
4 fe(2+) + o2 + 6 h2o => 4 iron(iii) oxide-hydroxide + 12 h(+)
4 Fe(2+) + O2 + 6 H2O => 4 iron(III) oxide-hydroxide + 12 H(+)
4 fe(2+) + o2 + 6 h2o => 4 iron(iii) oxide-hydroxide + 12 h(+)