The concentration of reactants plays a significant role in determining the rate of an inorganic reaction. According to the collision theory, for a reaction to occur, the reactant particles must collide with each other with sufficient energy and proper orientation. The rate of a chemical reaction depends on the frequency of these effective collisions.In the case of hydrochloric acid HCl reacting with magnesium metal Mg , the reaction can be represented by the following balanced equation:Mg s + 2 HCl aq MgCl aq + H g As the concentration of hydrochloric acid increases, there will be more HCl particles present in the solution. This leads to a higher probability of effective collisions between HCl and Mg particles, resulting in an increased rate of reaction.To investigate the relationship between the concentration of hydrochloric acid and the rate of reaction with magnesium metal, you can perform an experiment by following these steps:1. Prepare different concentrations of hydrochloric acid by diluting it with distilled water. For example, you can prepare 0.5 M, 1.0 M, 1.5 M, and 2.0 M HCl solutions.2. Cut equal lengths of magnesium ribbon, ensuring they have the same mass. This will help maintain consistency in the experiment.3. Measure the initial rate of reaction for each HCl concentration. This can be done by adding the magnesium ribbon to the HCl solution and measuring the time taken for the magnesium to completely dissolve. Alternatively, you can collect the hydrogen gas produced and measure the volume of gas produced within a specific time interval.4. Record your observations and plot a graph of the rate of reaction against the concentration of hydrochloric acid.According to the results, you should observe that the rate of reaction increases with the increase in the concentration of hydrochloric acid. This is because a higher concentration of HCl leads to more frequent effective collisions between the reactant particles, resulting in a faster reaction rate.However, it is essential to note that other factors, such as temperature, pressure, and the presence of catalysts, can also influence the rate of reaction. In this specific investigation, we are only considering the effect of reactant concentration.