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What other byproducts come from the born-haber cycle?

Answer 1

Avery Adams

The standard method for calculating lattice enthalpies is the Born-Haber Cycle.

For sodium chloride this is #DeltaH# for:

#Na_((g))^++Cl_((g))^(-)rarrNaCl_((s))#

If the substance is composed of discrete ions, this can also be computed using a theoretical electrostatic model.

The work done in separating 2 charges #q_1# and #q_2# from a distance #r# to infinity is given by:

#Wprop-(q_(1)q_(2))/r#

Where #r# is the separation.

This concept can be extended to three dimensions, allowing us to compute a "theoretical" value for the lattice enthalpy. The ionic character of the bond can be measured by comparing the experimental Born-Haber values with those derived from the theoretical model.

Sodium chloride gives a very good agreement indicating that the ionic model we use is a good one. There is much more discrepancy between the values for silver chloride indicating more covalent character than would be expected if it were #Ag^+Cl^-#.

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Answer 2

Luna Chen

In addition to the lattice energy, other byproducts of the Born-Haber cycle include the enthalpy of sublimation, the enthalpy of atomization, and the ionization energy.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.