Chemistry C3 - Rate of reactions

For a reaction to happen, reactant particles must collide with enough energy for the collision to be successful. The rate of reaction increases if there is an increase in temperature, concentration of reactants in solution or pressure of gaseous reactants. These changes can be explained in terms of the rate of successful collisions.

The rate of reaction can be increased by increasing the surface area of one of the reactants, for example by making it into a powder. There is a risk of explosion in factories handling combustible powders such as custard powder. Catalysts…