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When a catalyst is involved in the collision between the reactant molecules, less energy is required for the chemical change to take place, and hence more collisions have sufficient energy for reaction to occur. The reaction rate therefore increases.Collision theory is closely related to chemical kinetics.hen a catalyst is involved in the collision between the reactant molecules, less energy is required for the chemical change to take place, and hence more collisions have sufficient energy for reaction to occur. The reaction rate therefore increases. Collision theory is closely related to chemical kinetics.
In order to determine whether a chemical reaction is spontaneous, one has to consider both entropy and the enthalpy of the reaction in the form of Gibbs free energy. When â¦ Gibbs Free Energy takes a negative value, the reaction is said to be spontaneous and will freely occur without further input.