What is the lattice enthalpy of MgCl2?

Thread starter Sunny Kumar
Start date Feb 19, 2010
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Lattice

AI Thread Summary

Lattice enthalpy refers to the energy change when one mole of an ionic compound is formed from its gaseous ions, specifically the energy released when the ionic compound is formed from its constituents. It is not the energy associated with breaking bonds but rather the energy involved in the formation of the solid lattice structure. In the Born-Haber cycle for MgCl2, the correct notation is U, representing the lattice enthalpy for one mole of the compound. Understanding lattice enthalpy is crucial for calculating the stability and formation of ionic compounds. Clear definitions and correct usage in calculations are essential for accurate thermodynamic assessments.

Feb 19, 2010

Sunny Kumar

can someone please tell me what actually is lattice enthalpy. Is it energy released when one mole of bonds are broken or the energy released when one of an ionic compound is broken into the constituents? So do we write U or 2U in the born habber cycle of MgCl2?

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Feb 19, 2010

Sunny Kumar

can anyone please reply? I need answers...

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