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Define the term 'Standard Enthalpy Change of Formation'

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asked 6 years ago in Chemistry by RyanW (710 points)

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The standard enthalpy of formation or standard heat of formation of a compound is the change of enthalpy that accompanies the formation of 1 mole of a substance in its standard state from its constituent elements in their standard states (the most stable form of the element at 1 bar of pressure and the specified temperature, usually 298.15 K or 25 degrees Celsius). Its symbol is ΔHfO or ΔfHO.

Source: Wikipedia

answered 6 years ago by kaz786 (210 points)

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