Collision theory of reaction rate bimolecular reactions salient features.
`to` The reaction molecules are assumed to be hard spheres
`to` The reaction is postulated to occur when molecules colloide with each other.
`to` The number of collision per second per unit volume of the reactin maxture is known as collision frequency (Z).
`to` For a bimolecular elementary reaction
`A+B to` products
Rate `=Z_(AB). e^(-E_(a)//RT),Z _(AB)=` collision frequency.
`to` All collisions do not lead to product formation.
`to` The collisions with sufficient kinetic energy (Threshold energy) are respnsible for product formation. These are called as effective collisions.
`to` To account for effective collisios a factor p called to probability factor or steric factor is introduced.
Rate `=P Z_(AB), e^(-E_(a)//RT)`
