Why Is Enthalpy Of Formation Of Oxygen Zero? The enthalpy of formation for an element in its elemental state will always be 0 because it takes no energy to form a naturally-occurring compound. … When a substance is formed from the most stable form of its elements, a change in enthalpy takes place. Why is
How Do You Calculate Delta H Formation? Add together the heats of formation for the products, CO + H2, which is –110.53 kJ/mol + 0 kJ/mol = –110.53 kJ/mol. Subtract the sum of the heats of formation of the reactants from that of the products to determine delta H: delta H = –110.53 kJ/mol –
What Is The Standard Enthalpy Of Formation Of Fe? Cations ΔHf (kJ/mol) ΔHf (kJ/mol) Fe3+ (aq)-47.7 -691.1 H+ (aq) 0.0 -1302.5 K+ (aq) -251.2 -1298.7 Li+ (aq) -278.5 -55.9 Which substance has a standard enthalpy of formation of zero Fe L? All elements in their standard states (oxygen gas, solid carbon in the form of