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Q.

Which statement about molecularity of reaction is not correct ?

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a

It can be obtained from reaction mechanism

b

It may be either whole number or fractional

c

It depend on elementty step of reaction

d

It is the number of molecules of reactants
taking part in a single step reaction

answer is B.

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Detailed Solution

  • Molecularity can never be fractional but it is always in the whole number.
  •  The molecularity of a reaction is defined as the number of molecules or ions that participate in the rate-determining step. 
  • The molecularity of the reaction can be 1,2,3 etc and according to that, the reaction will be known as unimolecular, bimolecular, trimolecular etc.

 

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