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Question

A reaction involving two different reactants can never be __________


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Solution

Unimolecular reaction:

  • A reaction in which only one reacting molecule is involved is known as a Unimolecular reaction.
  • Example: Decomposition of ammonium nitrite.
  • The chemical reaction can be depicted as:

2NaNO3(aq)2NaNO2(aq)+O2(g)

Bimolecular reaction:

  • “A bimolecular reaction involves a simultaneous collision between two species.”
  • Example: Dissociation of hydrogen iodide.
  • The chemical reaction can be depicted as:

2H2(g)+I2(g)2HI(g)

Thus, a reaction involving two different reactants can never be an unimolecular reaction.


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