Experiments with tin, lead and their compounds
| element | required compound | link to experiment | |
| * |
Pb |
Pb(NO3)2 |
Electrolysis, formation of lead crystals. A solution of lead nitrate in a petri dish is electrolysed. Crystals of lead metal are formed at the cathode. |
|
Pb |
Pb(NO3)2 KI |
Nice effects in petri dish with yellow precipitate. Lead nitrate and potassium iodide are put in a petri dish, filled with water. The dissolved salts diffuse towards each other, giving nice effects. |
|
| * |
Pb |
PbI2 |
Lead iodide: color depending on temperature and decomposition. lead iodide is heated. If heating is not too strong, then it can change color reversibly from yellow to deep red. |
| * |
Pb |
Pb(CH3COO)3·3H2O KI CH3COOH (dilute) |
"Golden" crystals of lead iodide. A yellow precipitate of lead iodide is made and dissolved in boiling water. On cooling down, beautiful glittering yellow crystals are formed. |
| * |
Sn |
SnCl2·2H2O KI HCl (dilute) |
Tin chloride and iodide, formation of a remarkable orange complex/precipitate. Tin chloride and potassium iodide, when added to each other, result in formation of yellow precipitate. At high concentration and after some time, this precipitate turns orange. |
| * |
Sn |
Sn (preferably powder) I2 CH2Cl2 or CS2 |
Preparation of tin(IV) iodide, a volatile covalent compound. Tin and iodine are made to react in a suitable solvent for iodine. Under these conditions the interesting compound tin(IV) iodide is formed, which can easily be isolated. Some properties of this compound are shown. |