Collision Theory

Lesson 7 of 7 • 3 upvotes • 10:45mins

Deepak James

Collision Theory Proposed by William Lewis The no of collisions per second per unit volume of the reaction mixture is known as collision frequency A+B-----> products Rate = ZAB e- Ea/Rt The collision in which molecules collide with sufficient kinetic energy and proper orientation so as to facilitate breaking of bonds between reacting species and formation of new bond to form products are as called effective collisions Eg: CH3br+ OH- -----> CH3OH + Br- It follows SN2 mechanism, first order kinetics The rate of the reaction R = (CH3br)(OH-) Failures of collision theory It considered atoms as hard spheres and ignore their structural aspect