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A piece of burning magnesium ribbon was plunged into a gas jar containing sulphur (IV) oxide.

  1. What observation was made? 
  2. Write an equation for the reaction taking place.
  3. What property of sulphur (IV) oxide is investigated above.

1 Answer

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  1. A yellow deposit of sulphur is observed and a white powder of MgO formed.
  2. 2Mg(s)  +  SO2(g)  → 2MgO(s) + S(s) 
  3. Oxidising agent/property
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