The equation MgS + 2H2 -> Mg + H2S.

  1. The chemical equation above represents a chemical reaction between magnesium sulfide (MgS) and hydrogen (H2) to form magnesium (Mg) and hydrogen sulfide (H2S). In this equation, MgS and H2 are the reactants, while Mg and H2S are the reaction products.

  2. Reaction conditions: For the reaction to occur, high temperature and high pressure are needed. In addition, the presence of a catalyst is required to accelerate the reaction rate.

  3. Reaction process: When magnesium sulfide is heated with hydrogen at high temperature and pressure, it decomposes into magnesium and hydrogen sulfide. This reaction is a redox reaction, in which magnesium sulfide is reduced to magnesium and hydrogen is oxidized to hydrogen sulfide.

  4. Occurrences: When the reaction occurs, you can see magnesium sulfide transforming into another solid (magnesium) and a gas (hydrogen sulfide). Hydrogen sulfide has a very unpleasant smell, especially when released at high concentrations.

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