define standard enthalpy of formation.
Asked by | 27th Sep, 2008, 08:38: AM
Enthalpy of formation : It is the change in enthalpy of the system when one mole of a substance is formed directly from its elements.
eg: 1/2 H2 + 1/2 Cl2 HCl
Answered by | 27th Sep, 2008, 02:13: PM
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