Reactions with waterReactions with air
2CdO(s)Reactions with halogensCdF2(s)CdBr2(s)CdI2(s)Reactions with acidsCd2+(aq) + SO42-(aq) + H2(g)Reactions with bases|
Compounds | Reactions | Production
|
| Reactions of Cadmium |
| Reactions with water |
| Cadmium does not react with water. |
| Reactions with air |
| Cadmium readily burns in air to produce cadmium(II) oxide. |
| 2Cd(s) + O2(g)2CdO(s) |
| Reactions with halogens |
| Cadmium reacts with fluorine, bromine and iodine to produce cadmium(II) dihalides. |
| Cd(s) + F2(g)CdF2(s) |
| Cd(s) + Br2(g)CdBr2(s) |
| Cd(s) + I2(g)CdI2(s) |
| Reactions with acids |
| Cadmium dissolves slowly in dilute sulphuric acid to form solutions containing the Cd(II) ion and hydrogen gas. |
| Cd(s) + H2SO4(aq)Cd2+(aq) + SO42-(aq) + H2(g) |
| Reactions with bases |
| Cadmium will not dissolve in aqueous alkalis. |
| Reduction Potentials | |
| Balanced half-reaction | E0 / V |
Cd2+ + 2e- Cd(s) |
-0.403 |
| Cd(CN)42- + 2e-Cd(s) + 4CN- |
-1.09 |
| Cd(NH3)42+ + 2e-Cd(s) + 4NH3 |
-0.61 |
| Cd(OH)2(s) + 2e-Cd(s) + 2OH- |
-0.81 |
| CdS(s) + 2e-Cd(s) + S2- |
-1.17 |