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Question

In the equation, rate=ZABe-EaRTwhat does ZAB means?


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Solution

Collision Theory:

  1. For a chemical reaction to begin, the reacting molecules must approach and collide. The bonds between the interacting molecules are severed as a result of these collisions, and the product is created with new bonds.
  2. To explain the reaction rates in a gaseous state, Arrhenius presented a simple collision theory. Kinetic molecular theory or reaction rate collision theory is the name given to this theory.
  3. Arrhenius equation is given by rate=Ae-EaRT where A is a pre-exponential factor or orientation factor which tells the orientation of the molecule.
  4. For reaction A+BAB, the Pre exponential factor is also given by A=PZABe-EaRT where P represents the probability factor, ZAB represents collision frequency, Ea represents activation energy, R represents gas constant, and T represents temperature.

Therefore, the collision frequency of the reactants A and B are represented by ZAB.


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