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Energy Changes in the Formation of Magnesium Oxide

Understanding the energy changes involved in the formation of magnesium oxide (MgO) from gaseous magnesium (Mg) and oxygen (O) based on various energy values such as ionization energies and lattice energies.

herrod-acosta
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Energy Changes in the Formation of Magnesium Oxide

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  1. Energy Changes for Mg(g) + O(g)  MgO(s) Mg2+(g) +O2-(g) EA2 of O-(g) = 844 kJ Mg2+(g) + 2e- +O(g) EA of O(g) = -141 kJ Mg2+(g) + 1e- +O-(g) 2nd IE of Mg = 1451 kJ Crystal lattice energy of MgO = -3850 kJ Mg+(g) + e- +O(g) 1st IE of Mg = 738 kJ Mg(g) + O(g) Net energy change for Mg(g) + O(g) MgO(s) = -958 kJ MgO(s)

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