haber cycles

Question 1

Why do we need born-Haber cycles?

Answer 1

We cannot measure the lattice enthrall directly as it is not possible to form one mole of ionic solid from gaseous ions in practice. Instead we use a type of hess’s cycle where we can experimentally measure another path between the gaseous ions and the ionic lattice

Question 2

What does hess’ law say that is important to this topic?

Answer 2

It doesn’t matter which direction you take, the total energy changes are the same

Question 3

What is the generic born-haber cycle?

Answer 3

As we are interested in the energy released when 1 mole of ionic solid forms gaseous ions :

X+Y=XY
The enthalpy change would be delta LE H standard as one mole is being formed? (It’s exothermic)

Question 4

Watch the video it makes more sense

Answer 4

https://www.youtube.com/watch?v=kG2VVYzPsgA&list=PLkocNW0BSuEFvnpnhj8fKN-KFUOlnKiT0&index=28