Al3+(aq) Al 2 S 3 (s) Sb 2 S 3 (s) As 2 S 3 (s) Ba2+(aq) Bi 2 S 3 (s) Br−(aq)Co2+(aq) \(\ce{Co^{3...Al3+(aq) Al 2 S 3 (s) Sb 2 S 3 (s) As 2 S 3 (s) Ba2+(aq) Bi 2 S 3 (s) Br−(aq)Co2+(aq)Co3+(aq)Cu+(aq)Cu2+(aq)Fe2+(aq)Fe3+(aq)MnO−4(aq)MnO2−4(aq) H 4 P 2 O 7 (s) S 8 (s) (rhombic) H 2 S 2 O 7 (s) S 2 Cl 2 (g)