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14 Define the following(i) Enthalpy of formation(ii) Hess's Law of Constant Heat Summation. |
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Answer» The standardenthalpy of formationor standardheat of formationof a compound is the change ofenthalpyduring theformationof 1 mole of the substance from its constituent elements, with all substances in their standard states. ... For an element: the form in which the element is most stable under 1 bar of pressure. |
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