Changing the concentration of reactants in a chemical reaction can significantly affect both the rate of the reaction and the resulting yield of products. Here's how:1. Rate of reaction: The rate of a chemical reaction is the speed at which reactants are converted into products. According to the collision theory, a reaction occurs when reactant particles collide with sufficient energy and proper orientation. Increasing the concentration of reactants increases the number of particles in a given volume, which in turn increases the frequency of collisions between reactant particles. As a result, the rate of the reaction increases. Conversely, decreasing the concentration of reactants reduces the frequency of collisions and slows down the reaction rate.2. Yield of products: The yield of products in a chemical reaction refers to the amount of products formed at the end of the reaction. The relationship between the concentration of reactants and the yield of products depends on the type of reaction: a. For a complete reaction, where all reactants are converted into products, increasing the concentration of reactants will result in a higher yield of products, as there are more reactant particles available to form products. b. For an equilibrium reaction, where the reaction can proceed in both forward reactants to products and reverse products to reactants directions, the yield of products depends on the position of the equilibrium. According to Le Chatelier's principle, if the concentration of reactants is increased, the equilibrium will shift towards the products to counteract the change, resulting in a higher yield of products. Conversely, if the concentration of reactants is decreased, the equilibrium will shift towards the reactants, reducing the yield of products.In summary, changing the concentration of reactants can affect the rate of a chemical reaction and the resulting yield of products. Increasing the concentration of reactants generally increases the rate of the reaction and can lead to a higher yield of products, depending on the type of reaction. Conversely, decreasing the concentration of reactants slows down the reaction rate and can result in a lower yield of products.