FACTORS AFFECTING RATE OF CHEMICAL REACTION:
(i) Concentration
(ii) Temperature
(iii) Nature of reactants and products
(iv) Catalyst
(v) pH of the solution
(vi) Dielectric constant of the medium.
(vii) Radiations / light
(viii) Pressure
(ix) Electrical and magnetic field.
(x) Surface area
The first four factors generally affect rate of almost all reactions while other factors are specific to some reactions only.