What are the advantages of transition state theory over collision theory?
Answers
Collision theory
Less energy is needed for the chemical change to occur when a catalyst is involved in the collision between the reactant molecules so more collisions have sufficient energy for a reaction to take place. Therefore the reaction rate increases. This theory is closely related to chemical kinetics.
Transition state theory
It explains the rates of elementary chemical reactions. It assumes a special type of chemical equilibrium between reactants and activated transition state complexes. The theory is mainly used to understand qualitatively how chemical reactions occur.
Advantage
Transition state theory is a generalization to reactions in solutions while the collision theory applies only to gas phase reactions.
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