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The enthalpy of formation is defined as the energy, in the form of heat, given off or absorbed during a chemical reaction under the most stable conditions for the reaction to occur from pure elements. The basic formula f... More »

The standard enthalpy of formation is defined as the amount of energy released or absorbed when one mole of a substance is created under normal conditions from its pure elements. Energy is in the form of heat. Standard c... More »

The standard enthalpy of formation is the change in heat required to form a particular product through a chemical reaction. It is also commonly called the standard heat of formation, and it is represented by the variable... More »

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The standard enthalpy of reaction denotes the heat lost or gained during a chemical reaction when one molar mass of a substance reacts under standard conditions. The standard enthalpy of reaction is shown as "?H" or "del... More »

The standard enthalpy of formation is the change in heat required to form a particular product through a chemical reaction. It is also commonly called the standard heat of formation, and it is represented by the variable... More »

The standard enthalpy of formation is defined as the amount of energy released or absorbed when one mole of a substance is created under normal conditions from its pure elements. Energy is in the form of heat. Standard c... More »

The enthalpy of vaporization is the energy, in the form of heat, that a substance needs to change from a liquid to a gas at a constant temperature and pressure. Enthalpy of vaporization, designated as "delta H vap," is m... More »