. Higher order (>3) reactions are rare due to:


A. low probability of simultaneous collision of all the reacting species

B. increase in entropy and activation energy as more molecules are involved

C. shifting of equilibrium towards reactants due to elastic collisions

D. loss of active species on collision

 

Best Answer

Correct option is (a)

There are some conditions for a reaction to occur:

  • proper orientation of molecules
  • effective collision of molecules
  • for three or more molecules to react simultaneously all the molecules must be in proper orientation and the chance of proper orientation of three or more molecules is very less.

So, higher order (> 3) reactions are rare due to low probability of simultaneous collision of all the reacting species.

 

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