by Maryam Hussain The heat of formation: The enthalpy of formation, also known as the heat of formation , of a compound is the heat involved in its formation from its constituent elements. The enthalpies of the formation of elements are assumed to be zero. Thus, for the special case of the heat reaction of a chemical reaction, the heat of formation, and enthalpies of each of the terms on the left-hand side of the chemical equation are zero, and the heat of reaction becomes equal to the heat of formation of the given compound. The standard heat of formation of a chemical compound is the enthalpy change when one g-mole of a specie at 25°C and 1 atm is formed from its elements in their naturally occurring states. Heats of formation of compounds are always expressed with reference to a standard state. The molal heat of the formation of a compound represents the heat of reaction, Δ o H f (kJ/mol), when 1 mole of the compound is formed from the elements in a reaction ...
Process Constraints and Optimization, Mass and Energy balances of process, Converters development, Assignments writing.