Thermodynamics: Enthalpy Change in Reactions

In a chemical reaction, the change in enthalpy ( ΔH) can be either positive or negative, indicating whether the reaction is endothermic or exothermic. For instance, the combustion of propane is an exothermic reaction, releasing heat to the surroundings. Conversely, the melting of ice absorbs heat from the environment, making it an endothermic process. Understanding these concepts is critical for predicting the behavior of reactions and processes in biological systems.

Given this information, which of the following statements accurately describes the relationship between enthalpy change and temperature in a reaction?