Changing the concentration of reactants in a chemical reaction can significantly affect the reaction rate. According to the collision theory, the reaction rate depends on the frequency of collisions between reactant molecules. When the concentration of reactants increases, the number of molecules in the reaction mixture also increases, leading to a higher probability of collisions and, consequently, a faster reaction rate.To support this statement, we can design an experiment and analyze the data obtained. Let's consider a simple reaction:A + B [Product]We can perform a series of experiments by varying the initial concentrations of reactants A and B while keeping other factors like temperature and pressure constant. For each experiment, we can measure the time taken for the reaction to reach a certain percentage of completion or monitor the rate of product formation.Experiment:1. Prepare different reaction mixtures with varying initial concentrations of A and B.2. Start the reaction and monitor the rate of product formation or the time taken for the reaction to reach a certain percentage of completion.3. Record the data for each experiment.Data Analysis:1. Plot the reaction rate or inverse of time taken against the initial concentration of reactants A and B.2. Analyze the trend in the graph.If the reaction rate increases with the increase in the concentration of reactants, the graph will show a positive correlation between the reaction rate and the initial concentration of reactants. This supports the statement that changing the concentration of reactants affects the reaction rate in a chemical reaction involving [product].In some cases, the relationship between the reaction rate and the concentration of reactants can be described by the rate law:Rate = k[A]^m[B]^nwhere Rate is the reaction rate, k is the rate constant, [A] and [B] are the concentrations of reactants A and B, and m and n are the reaction orders with respect to A and B, respectively. The values of m and n can be determined experimentally by analyzing the data obtained from the experiments.In conclusion, changing the concentration of reactants in a chemical reaction can significantly affect the reaction rate. This can be supported by experiments and data analysis, which can help determine the relationship between the reaction rate and the concentration of reactants.