How does an increase in reactant concentration affect the rate of reaction?

It leads to more frequent collisions, which increase reaction rate.

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It leads to less frequent collisions, which increase reaction rate.

It leads to more frequent collisions, which decrease reaction rate.

It leads to less frequent collisions, which decrease reaction rate.

It leads to more frequent collisions, which increase reaction rate

Explanation:

An increase in reactant concentration leads to an increase in reactant particles which increases the number of collision in a reaction and then causes a reaction to proceed faster.

This belief was first suggested by the collision theory which states that for a reaction to occur, the reacting particles must collide with one another. However, further studies show that not all collisions lead to a reaction, and only effective collisions lead to a reaction.

Hence, an increase in reactant concentration increases the frequency of collision which in turn increases the chances of effective collision and subsequently sincreases the reaction rate.

It leads to more frequent collisions, which increase reaction rate