The collision theory and transition state theory

Collision theory is based on the kinetic theory of gases observing how a chemical reaction can occur. According to the theory the reaction rate between the two types of molecules A and B is equal to jumiah collisions occurring per unit time between the two types of molecule. The number of collisions that occur per time unit is proportional to the concentration of A and the concentration of B. So the greater the concentration of A and B concentrations greater the number of collisions that occur.

Collision theory PROVE THIS HAVE SOME FLAWS ARE:

     Not all collisions result in a reaction because there is a certain energy that must be passed (called the energy of activation = activation energy) can produce the animal lays reaction. The reaction will only occur when the collision energy is greater than or equal to the activation energy (E a).
     molecules are more complicated spatial structures that do not produce the same number of collisions compared to the spatial structure of simple molecules.

Collision theory above tcori fixed by transition state theory of reaction rates or absolute. In this theory it is assumed that there is a situation that must be passed by the reacting molecules in its aim towards a final (product). The state is called the transition state. Transition state of the reaction mechanism can be written as follows:

A + B → T * -> C + D

where:

- A and B are reactant molecules
- T * is a molecule in a state of transition
- C and D are molecules of reaction

DIAGRAM IN THIS CONDITION MAY OTHERWISE APPROPRIATE TRANSITION CURVES FOLLOWING










From the diagram involved the activation energy (E a) is the energy of the initial state to the transition state energy. This means that the reactant molecules must have a minimum energy of activation energy (Ea) in order to achieve the transition state (T *) and then into the reaction (C + D).
Note:
activation energy (= energy of activation) is the minimum amount of energy required by the reactant molecules in order to carry out the reaction