Chemistry
Grade-10
Easy

Question

Which of the following chemical equations represent a decomposition reaction?

  1. H2SO3 → H2O + SO2
  2. 2K + 2H2O → 2KOH + H2
  3. None of the above
  4. Two of the above

hintHint:

A decomposition reaction can be said as a chemical reaction in which one reactant breaks down into two or more products. 

The correct answer is: H2SO3 → H2O + SO2


    straight H subscript 2 SO subscript 3 space rightwards arrow space straight H subscript 2 straight O space plus space SO subscript 2 represents a chemical decomposition reaction.
    • In decomposition reactions, a single reactant breaks down to give simpler products. 
    • Such a reaction is one in which a chemical substance disintegrates into two or more components.
    • As was previously said, these reactions typically need heat to take place.

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