Question

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

• A. Increase in entropy and activation energy as more molecules are involved.
• B. Low probability of simultaneous collision of all the reacting species.
• C. Loss of active species on collision.
• D. Shifting of equilibrium towards reactants due to elastic collisions

Answer 1

The correct option is B Low probability of simultaneous collision of all the reacting species.

Molecularity of a Reaction
The number of reacting species (atoms, ions or molecules) taking part in an elementary reaction which must collide
simultaneously, in order to bring about a chemical reaction.

Higher order (>3) reactions are rare since there is a very low probability of near-simultaneous collision of more than three molecules