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Sb2O3 ---> Sb2S3


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Is there a way to convert oxide to sulfide



Dissolve in HCl (forms a soluble chloro-stibnate (III) complex) and slowly add an excess of sodium sulfide while stirring constantly. The nice orange/red precipitate of Sb2S3 separates from the liquid.


Do this experiment in a good fumehood or outside. A lot of free H2S is formed as well!

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