Purification of 18k Gold
I've done a few gold videos, this one is the quickest and most to-the-point.
Also I want to note that I'm not actually sure whether chloroauric acid is volatile, or if it just evaporates away with water as an aerosol.
Materials: Impure gold, nitric acid, hydrochloric acid, sodium metabisulfite.
Hazards: Strong acids, nitrogen dioxide and sulfur dioxide gasses evolved.
Methods: Well known and common procedure for high purity gold refining.
Reupload from my tik-tok #science #chemistry #color #acid #oxidizer