The Effect Of Concentration Of The Reaction Between Sodium Thiosulphate And Hydrochloric Acid

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The Effect Of Concentration Of The Reaction Between Sodium Thiosulphate And Hydrochloric Acid

Introduction

For a chemical reaction to take place, particles have to collide with each other, and must collide hard enough to break the bonds within them so new substances are formed. Only a very small percentage of collisions result in a reaction. This is because there is an energy barrier to a reaction, and only those particles with enough energy to overcome the energy barrier will react when they collide.

The minimum energy that a particle must have to overcome the energy barrier and react is called the activation energy. The size of this activation energy is different for different reactions.

If the speed of chemical reactions is increased, the frequency of particles colliding and the force of the collision will also need to increase.

In this experiment, there are four variables that can be taken into account, are:

* Surface area,

* Catalysts,

* Light,

* Temperature, or

* Concentration.

Rate of reaction= 1/T

Surface area

As the surface area increases, the rate of reaction increases. This is because the particles on