Fe2(+3)O3(-2) + 3H2(0) = 2Fe(0) + 3H2(+)O(-2)
Fe(+3) +3e = Fe(0) |2
H2(0) -2e = 2H(+) |3
2H(+)J(-) + Br2(0) = 2H(+)Br(-) + J2(0)
J(-) -e = J2(0) | 2
Br2(0) + 2e = 2Br(-) |1
Fe2(+3)O3(-2) + 3H2(0) = 2Fe(0) + 3H2(+)O(-2)
Fe(+3) +3e = Fe(0) |2
H2(0) -2e = 2H(+) |3
2H(+)J(-) + Br2(0) = 2H(+)Br(-) + J2(0)
J(-) -e = J2(0) | 2
Br2(0) + 2e = 2Br(-) |1