The chemical equation 2ZnS -> 2Zn + S2

  1. The above chemical equation describes the reaction between zinc sulfide (ZnS) and heat to produce zinc (Zn) and sulfur (S2).

  2. Reaction conditions:

    • This reaction requires high temperature to occur.
    • Simultaneously, the reaction also needs air to proceed.

  3. Reaction process: When zinc sulfide (ZnS) is heated, it decomposes into zinc (Zn) and sulfur (S2).

  4. Occurrence phenomenon: When the reaction takes place, the solid zinc sulfide converts into solid zinc and sulfur gas. This can be identified through the unpleasant smell of sulfur gas. Besides, zinc is silver white and solid at room temperature, while sulfur is yellow and solid at room temperature.

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