How to Precipitate Gold With Sodium Hydroxide? | Gold Precipitation Sodium Hydroxide | Gold Recovery
How to Precipitate gold with sodium hydroxide? from pure gold foils that i dissolve from AQUA REGIA. Thanks for watching.
-TIMESTAMPS-
00:00 Gold foils filtrations
04:01 Drying gold foils
04:36 Dissolving gold with AQUA REGIA
10:55 Filter solutions
11:57 Taking stannous test in AQUA REGIA solution
12:37 Second filtration of solution
13:57 How to precipitate gold with sodium hydroxide?
21:35 Decanting solution and taking stannous test old solution
25:15 How to clean precipitated gold powder?
26:07 Boiling gold powder with hydrochloric acid
26:46 Drying gold powder and melting
31:02 Scale gold