Enthalpy is the total heat content of a system, which helps us understand different energy relations. Learn standard conditions for measuring enthalpy and FAQs. In this tutorial, you will learn about enthalpy , including its definition, factors affecting it, and its role in process calculations. You’ll explore how enthalpy relates to heat transfer, the differences between molar internal energy and molar enthalpy , and its significance in various applications. Enthalpy of Vaporization It is defined as the heat change or enthalpy change when one mole of a liquid is converted into vapors or a gaseous state at its boiling point. For example, When one mole of water is converted into steam at 1000C or 373 K, the heat absorbed is 9.71kCal, which is the heat of vaporization of water. The change can be represented as 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.
