Teori Laju Reaksi

Teori Tumbukan (COLLISION THEORY) Teori keadaan transisi

Atau (Teori Kompleks Teraktifkan)

COLLISION THEORYCOLLISION THEORY

Collision theory states that...

• particles must COLLIDE before a reaction can take place• not all collisions lead to a reaction• reactants must possess at least a minimum amount of energy - ACTIVATION ENERGY

plus• particles must approach each other in a certain relative way - the STERIC EFFECT

According to collision theory, to increase the rate of reaction you therefore need...

more frequent collisions increase particle speed orhave more particles present

more successful collisions give particles more energy orlower the activation energy

Video1 video2

The main features of collision theory are: molecules are hard spheres, i.e. there are no

inter molecular interactions, vibrational and rotational structures of

reactants and products are ignored, the activated complex plays no part in the

theory, and redistribution of energy on reaction is

ignored.

Collision theory

Assumption: Molecules are hard spheres and do not interact with each other

Types of collisions Collision between similar gas molecules Collision between different types of gas molecules

1. Collision between moving and stationary molecules

2. Collision between moving molecules

Collision between moving and stationary molecules

ZAB dan A bisa sama dan bisa berbeda , shg perlu faktor p