(a) How does the collision theory explain the rate of a chemical reaction?
(b) State how each of the following affects the rates of chemical reactions:
(i) surface area (ii) catalyst
Explanation
(a) That the number of collisions between the reactant molecules is directly proportional to the rate of reaction
Mathematically number of Collisions of reactant molecules (alpha) Rate of reaction
(b)(i) The larger the surface area available for heterogeneous reaction the faster the reaction.
(ii) Catalyst increases the rate of a spontaneous reaction by reducing the activation energy of the reactant.