Nitric acid oxidizes the steel to +three ions, but only in minute amounts, ordinarily undetectable inside the pure acid as a result of chemical equilibrium of the response. Nevertheless, the ions are faraway from the equilibrium by hydrochloric acid, forming AuCl−4 ions, or chloroauric acid, thus enabling further more oxidation: https://sergiorwcg96395.blgwiki.com/793545/zahngold_verkaufen_tipps_und_informationen_zum_zahngoldankauf