Aim:

Investigating the effect of the effects of the concentration of sodium thiosulphate on the rate of reaction between sodium thiosulphate and hydrochloric acid.

Scientific Knowledge:

A chemical reaction is when several substances, which in this case are called the reactants, react to each other to form one or more substances, which in this case are called products or solutions. Though for this to happen particles must collide with each other, resulting in the bonds of the reactants are broken and re-arranged to form a new substance. The collision theory explains this. For the particles to collide they need a source of the required amount of energy for there to be a reaction between two substances. This is usually supplemented with heat energy. The minimum amount of energy that is need for a reaction to occur is called...