Question

explain the effect of concentration on reaction rate in terms of collisions between molecules: when the concentration of reactants increases, the reaction time , because increasing the of molecules or ions in solution increases the rate of between them.

Answer 1

The effect of concentration on reaction rate can be explained in terms of collisions between molecules. When the concentration of reactants increases, the reaction time decreases, because increasing the number of molecules or ions in solution increases the rate of collisions between them. This is because an increase in concentration means that there are more molecules or ions in a given volume, which increases the likelihood of collisions between them. When there are more collisions, there is a higher probability that the reactants will collide with enough energy and in the correct orientation to form products. Therefore, an increase in concentration leads to an increase in the reaction rate.