Why are the theoretical and Born Haber lattice enthalpies different?

The theoretical Born Haber enthalpy assumes a perfect ionic model where the attraction between the ions is purely electrostatic and the ions are purely spherical. The Born Haber lattice enthalpy is the real experimental value. 

AV

Related Chemistry A Level answers

All answers ▸

Calculate the pH of the solution formed when 30 cm3 of 0.150 moldm-3 aqueous sulfuric acid is added to 30 cm3 of 0.200 moldm-3 aqueous potassium hydroxide at 25 C.


Why is a nucleophilic substitution reaction between ammonia and benzene unlikely?


Why is cyclohexene able to react with bromine water, but Benzene isn't


Explain how chromatography is used to separate components in a mixture.