Based on the diagram, the statement explains how energy is conserved during this chemical reaction is the potential energy lost by the reaction suystem (B) is gained by the surroundings.
What is exothermic reactions?
Those reactions in which eneregy is released during the whole process, because energy of product is less than the energy of reactants.
In the given diagram it is given that energy of the reactants are more as compare to the products, so the reaction is exothermic in reaction means heat is released during this reaction. This released energy will absorb by the surrounding of the reaction system to maintain the law of conservation of energy.
Hence, option (D) is correct.
To know more about exothermic reaction, visit the below link:
https://brainly.com/question/6357350
