What Does a Negative H Tell About a Reaction
Heat energy is absorbed from the pan to cook the egg. A reaction will be spontaneous if H is negative and S is positive Reason G will be negative when there is a decrease in enthalpy and an increase in entropy. Heat Of Reaction Reflects The Difference In Enthalpy Between The Products And The Reactants Teaching Chemistry Chemistry Education Teaching Science When delta H is negative it means the products in the reaction have lower energy compared to the reactants so the reaction has lost energy and released it as heat making it exothermic. . So for a process carried out at constant pressure if the heat added to the system is positive endothermic Δ H is positive and if the heat added to the system is negative exothermic heat removed from system Δ H is negative. A reaction will always be spontaneous under any temperature only if the change in enthalpy delta H is negative and the change in entropy delta S is positive. A reaction which is exothe...