abdalhafdhali
Member
I precipitated from Aqua Regia using sodium metabisulfate, but it did not succeed in precipitating. Then I used aluminum, and this was the precipitate shown in the picture. Is this a gold precipitate, or did I make a mistake? When I put it in nitric, it turned gray and not brown.View attachment ٢٠٢٣٠٩١٩_٢٠٥٩٢٦.mp4View attachment ٢٠٢٣٠٩١٩_٢٠٥٩٢٦.mp4
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