Preparation sulfide

1. The iron sulfide

To the lump iron sulfide is added hydrochloric acid (1:1).

2. The aluminum sulfide

Lump aluminum sulfide is added hydrochloric acid. The prepared sulphide has greater purity than prepared from iron sulfide.

3. The paraffin and sulfur

50 g melted paraffin (wax), add 20 g of sulfur and 10 g of alumina. This mixture will create beads. On the evolution of hydrogen sulphide ball just melt in the tube and after a while it starts to evolve hydrogen sulfide

Aluminum oxide acts as a catalyst.

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