Experiments with antimony, bismuth or their compounds
| element | required compound | link to experiment | |
| * |
Bi |
Bi(NO3)3·xH2O HNO3 (dilute) HCl (dilute) NaCl KBr KI |
Bismuth complexes with halogens. Bismuth in its +3 oxidation state forms a black precipitate with iodide ions, and a deep orange complex is formed when excess iodide ion is present. Chloride and bromide also form complexes. |
|
Sb |
Sb2S3 HCl (30%) |
Antimony sesquisulfide, stunning change of its appearance when it is hydrated. Some pyro-grade black antimony sesquisulfide is dissolved in conc. hydrochloric acid. When the solution is diluted, then hydrolysis occurs and a bright yellow precipitate of hydrated antimony sesquisulfide is produced. |