Q.

Which of the following elementary reactions is uni-molecular?

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a

Aproducts

b

A+B+Cproducts

c

A+Bproducts

d

2Aproducts

answer is A.

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Detailed Solution

  • Molecularity of an elementary reaction is defined as the number of reactant molecules taking part in the reaction.
  • A uni-molecular reaction is an elementary reaction that involves only one reaction molecule, a bi-molecular reaction is an elementary reaction that involves two reactant molecules, etc. 
  • For example, NH4NO2 → N2 + 2H2O
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