define standard enthalpy of formation.

Asked by  | 27th Sep, 2008, 08:38: AM

Expert Answer:

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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