The collision theory explains this outcome since when the reaction is complete reactant particles can not interact and therefore the reaction does not occur.
The collision theory is a well sustained theory used in chemistry that states reactions are caused by the collision of particles that form their molecules.
This theory (collision theory) may result very useful to explain the rate of change in a given chemical reaction.
In conclusion, the collision theory explains this outcome since when the reaction is complete reactant particles can not interact and therefore the reaction does not occur.
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