Final answer:
Increasing reactant concentration leads to more collisions, speeding up the reaction rate.
Explanation:
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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