Platine
De Hack-it.org.
| Ligne 12 : | Ligne 12 : | ||
<h2>Alchimie du platine</h2> | <h2>Alchimie du platine</h2> | ||
| + | http://www.reptox.csst.qc.ca/Produit.asp?no_produit=52415&nom=Acide+chloroplatinique+solide&incr=0 | ||
Le platine ne se dissout que dans l'eau régale.<br> | Le platine ne se dissout que dans l'eau régale.<br> | ||
*This metal is insoluble in hydrochloric and nitric acid, but does dissolve in the mixture known as aqua regia (forming chloroplatinic acid). Common oxidation states of platinum include +2, and +4. The +1 and +3 oxidation states are less common, and are often stabilized by metal bonding in bimetallic (or polymetallic) species.The gold is removed from this solution as a precipitate by treatment with iron(II) chloride (FeCl2). The platinum is precipitated out as impure (NH4)2PtCl6 on treatment with NH4Cl, leaving H2PtCl4 in solution. | *This metal is insoluble in hydrochloric and nitric acid, but does dissolve in the mixture known as aqua regia (forming chloroplatinic acid). Common oxidation states of platinum include +2, and +4. The +1 and +3 oxidation states are less common, and are often stabilized by metal bonding in bimetallic (or polymetallic) species.The gold is removed from this solution as a precipitate by treatment with iron(II) chloride (FeCl2). The platinum is precipitated out as impure (NH4)2PtCl6 on treatment with NH4Cl, leaving H2PtCl4 in solution. | ||
