To contact Envestnet Asset Management, Inc., please visit www.envestnet.com. Company data is provided by S&P Global Market Intelligence. Please use this form to report any data issues.
Enthalpy of a reaction or energy change of a reaction D H, is the amount of energy or heat absorbed in a reaction. If the energy is required, D H is positive, and if energy is released, the D H, is negative.
Reactions in which energy is released are exothermic reactions, while those that take in heat energy are endothermic. Key Terms. endothermic: A description of a chemical reaction that absorbs heat energy from its surroundings. enthalpy: In thermodynamics, a measure of the heat content of a chemical or physical system.