Total Heat of a Substance is also known as ___________.

By Mandeep Kumar|Updated : August 1st, 2022

Heat absorbed or evolved at constant pressure in a system is known as Enthalpy. The enthalpy change involved in the reaction is called reaction enthalpy. It is a useful quantity to know the heating or cooling required to maintain an industrial chemical reaction at a constant temperature.

Answer: The total heat of a substance is known as Enthalpy.

It depends on the conditions under which a reaction is carried out. The enthalpy change for a reaction when all the participating substances are in their standard states is the standard enthalpy of reaction. Standard enthalpy of fusion of referred to as the change in enthalpy that accompanies the melting of one mole of a solid substance in a standard state.

More details on Enthalpy

Following are the details on the terms associated with enthalpy:

Standard Enthalpy of Vaporization: The heat required to vaporize one mole of a liquid at constant temperature and under standard pressure that is one bar is known as standard enthalpy of vaporization.

Standard Enthalpy of Sublimation: It is referred to as the change in enthalpy when one mole of a solid substance sublimes at a constant temperature and under standard pressure.

Standard Enthalpy of Formation: The change for the formation of one mole of a compound from its elements in their most stable states of aggregation is called standard enthalpy of formation.

Summary:

Total Heat of a Substance is also known as

The total heat of a substance is called enthalpy. The change of heat at a constant pressure helps in determining the enthalpy change.

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