8.1b Born Haber Cycle | General Chemistry

Chad provides a brief lesson on how the Born-Haber Cycle can be used to calculate the lattice energy of an ionic compound. While lattice energies cannot be measured directly in a laboratory, the thermodynamic data from a number of processes that can be measured in a laboratory are typically available to allow for its calculation. This includes the enthalpy of formation of the ionic solid, the ionization energy (or ionization energies) of the metal, the electron affinity (or electron affinities) of the nonmetal, and more. A demonstration of how the Born-Haber Cycle can be used to calculate the lattice energy of NaCl is performed over the course of this lesson.

00:00 Lesson Introduction
00:38 Born Haber Cycle
05:21 How to Calculate the Lattice Energy of NaCl

[LeonardoCastro-gedl]

Hello, professor. I just wanted to briefly thank you for these videos. I started university a month ago, and I had a terrible high school base for everything, and honestly I thought I was lost and that maybe I got the wrong choice. But your classes simply saved me in a way no other professor was ever able to put Chemistry in my head. My first test is tomorrow, and I still have some videos to go through, but I already expect better results than I did a week ago. Thank you very much for making this available. Big hugs x

[belaytesema]

Never stop uploading such an amazing informative videos

[ayeshaarslan]

Will we always have 1/2 in these questions on one side of the equation? just curious?

[SakeenaManzoor-uy]

Seriously i didn't found such sort of best teacher even in my college and in u tube also

[Nonameerwe]

why do you put 1/2 in front of Cl, do you do it for all anions?

[Daniel-tytf]

Chad, as always great lesson!! 😊Very helpful. I actually have a question about ionization energy and electronegativity. I understand that the more shells there are, the weaker the bonds. But i am having trouble with the second factor. What is the rule that affects electronegativity and ionization energy levels? If there are more electrons in valence shell is it weaker/ higher or less. It's all getting mixed up in my head. The top to to bottom and left to right rule is confusing. Thanks again for your course!!!

[Bulayla]

What exactly is the energy for betwen
1/2 Cl2 to Cl?

Becauee they are both in gaseous state already

[jawatu]

Why is it formation and not ΔΗat you make 1 mole of gaseous atom from its standard state

[AgborSamuelEyoung-gqot]

I love your teaching sir and I wish to learn more

[ThunderSpear-bq]

Isn't lattice energy exothermic (-ve) tho