Watch this great video of Gold precipitation on YouTube

This great video is showing of how to precipitate gold from Aqua regia. Solution on this video is a chloride, in which we can find Gold.

It is important to wear proper safety equipment when performing these chemical experiments.

How to prepare Aqua regia?

Preparing Aqua regia solution for dissolving Gold.

First, pour 150 ml concentrated HCl (hydrochloric acid) in a polypropylene container, and then slowly add 50 ml of concentrated HNO3 (nitric acid). Now Aqua regia is prepared and you can start to dissolve Gold from plated metals.

See how Aqua regia dissolves gold.