Enthalpy: Is a fundamental concept in thermodynamics that

Enthalpy is a fundamental concept in thermodynamics that governs the principles of energy conservation and transfer . It is a property that helps scientists and engineers understand how energy is absorbed, stored, and released in various physical and chemical processes. Enthalpy is an energy-like property or state function —it has the dimensions of energy (and is thus measured in units of joules or ergs), and its value is determined entirely by the temperature, pressure, and composition of the system and not by its history. Enthalpy (H), is a property commonly used to describe the thermodynamics of chemical and physical processes. It is the total of a thermodynamic system’s internal energy as well as the volume times pressure ratio. It is a property or state function that is similar to energy; it has dimensions similar to energy (and is therefore measured in units of joules or ergs), and its value is solely dependent on the temperature, pressure, and composition of the system, rather than on its history. Enthalpy is the internal energy of a system plus the work done by the pressure and volume. Learn how to calculate enthalpy change, its sign convention, and its applications for phase changes and chemical reactions.