The statement that best describes the total energy change of the system is C. The reactants have higher potential energy, and energy is
absorbed.
What is energy diagram?
Energy diagrams show the energy versus reaction progress. The reactants are drawn above the products in exothermic reactions because to their higher energy. In contrast, the reactants are drawn beneath the products in endothermic processes.
The energy diagram shows the variations in energy that occur throughout a chemical reaction. The phrase "energy is absorbed, and the reactants have greater potential energy" sums up the system's overall energy shift the best. Therefore, statement better captures the system's overall energy change.