How does decreasing the concentration of a substance affect its reaction rate?
The reaction rate increases
the reaction rate decreases
the reacion rate is unchanged
1 answer
The reaction rate decreases. This is because there are fewer molecules available to collide with each other and react when the concentration of a substance is decreased. The rate of reaction is directly proportional to the concentration of reactants, so decreasing the concentration will result in a slower reaction rate.
1 answer