The answer is; D
Enthalpy is the system’s internal energy ( considering the product of its pressure and volume). When the enthalpy is negative, it means that the products have a lower energy level than the reactants - meaning the system has dispensed some energy into the environment.
Answer: Option (D) is the correct answer.
Explanation:
When reactants absorb energy in a chemical reaction then products have more energy than the reactants. The value of [tex]\Delta H[/tex] is positive for an endothermic reaction.
Whereas when reactants release energy in a chemical reaction then products have less energy than the reactants. The value of [tex]\Delta H[/tex] is negative for an exothermic reaction.
Thus, we can conclude that if the enthalpy value for a reaction is negative, then it indicates that the reaction is exothermic and heat is released to the surroundings.
