Increasing reactant concentration leads to more collisions, speeding up the reaction rate.
Increasing the concentration of one or more reacting substances increases the reaction rate due to more frequent collisions. For example, in a solution with a higher concentration of acid, more acid particles can collide with the reactants, leading to a faster reaction rate.
Another factor influencing reaction rate is the energy of collisions. Assuming adequate energy, more collisions due to increased concentration result in a faster reaction.
Therefore, higher concentration facilitates more collisions, accelerating the reaction rate.
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