why didn' we break the bond of oxygne to get the free radical using bond dissociation energies. Would we than add electrons one and two to get oxygen with the 2- charge?
@sschw006 In these examples I've used the atomisation energy of Oxygen (and other diatomic molecules). However, you could use the bond dissociation energy instead because atomisation energy = 1/2 dissociation energy.
The only part I dont understand about born haber cycles are the fractions by the molecules. In my book, I have a 249.2 kj for elemental Oxygen in gas phase. so the whole fraction thing confuses me....
Nonetheless, this video definitely helped me become less confuse about the born haber cycle in all
I have a question about the lattice energy , do we subtract it from the value of oxygen and Mg atomization and ionisation ? or it is already negative ? and thanks
@universen1 Usually it is already negative, and so doesn't need to be subtracted. In some older textbooks it's given as positive, in which case you do need to subtract it!
@jamesmungall oh, it's ok i got it . Thanx your videos are really helpfull today was my midyear exam and I did well . Thanks again , and by the way your notes are really really good it helped me alot .
I watched the first three videos in this series and understood in 6 minutes what I could not understand in an hour of reading the textbook. SO SIMPLE!
@haxelex Same really, I wasn't in class for this and the textbook just has an extremely abstract and assumption-making way of explaining things. Thanks immensely for the video!
the correct second EA for oxygen is 744kj/mol i looked it up in my descriptive inorganic book i did my calculations and i got exactly -602kj/mol, ur video really helped me in understanding the cycle thank u so much
That's very interesting...I've just looked up the value in 'Calculations in A-level Chemistry' by Jim Clark, and he uses a value of +844kJ/mol! In fact I think that EAs cannot be calculated independently but are actually calculated using Born Haber cycles. So it must depend upon which cycle you use as to what EA you get. Good luck with your studies, James
why didn' we break the bond of oxygne to get the free radical using bond dissociation energies. Would we than add electrons one and two to get oxygen with the 2- charge?
sschw006 4 months ago
@sschw006 In these examples I've used the atomisation energy of Oxygen (and other diatomic molecules). However, you could use the bond dissociation energy instead because atomisation energy = 1/2 dissociation energy.
jamesmungall 4 months ago
I can't thank you enough for this video, its the only one that's been explained so clearly, I finally understand!! :D
pigjelly4612 1 year ago
The only part I dont understand about born haber cycles are the fractions by the molecules. In my book, I have a 249.2 kj for elemental Oxygen in gas phase. so the whole fraction thing confuses me....
Nonetheless, this video definitely helped me become less confuse about the born haber cycle in all
purpleyes 1 year ago
I have a question about the lattice energy , do we subtract it from the value of oxygen and Mg atomization and ionisation ? or it is already negative ? and thanks
universen1 1 year ago
@universen1 Usually it is already negative, and so doesn't need to be subtracted. In some older textbooks it's given as positive, in which case you do need to subtract it!
jamesmungall 1 year ago
@jamesmungall oh, it's ok i got it . Thanx your videos are really helpfull today was my midyear exam and I did well . Thanks again , and by the way your notes are really really good it helped me alot .
universen1 1 year ago
THANK YOU SO MUCH. YOU'RE SO MUCH MORE HELPFUL THAN MY TEACHER AND MY TEXTBOOK COMBINE. Lmao seriously though, thank you so much.
xxshruthixx 1 year ago
I watched the first three videos in this series and understood in 6 minutes what I could not understand in an hour of reading the textbook. SO SIMPLE!
haxelex 1 year ago
@haxelex Same really, I wasn't in class for this and the textbook just has an extremely abstract and assumption-making way of explaining things. Thanks immensely for the video!
Skulldaman 11 months ago
good video, the guy narrating definately sounds like he enjoys a good old shafting tho
julesisagimp 1 year ago
you are a good teacher !!!! thank you!
rickonel 1 year ago
the correct second EA for oxygen is 744kj/mol i looked it up in my descriptive inorganic book i did my calculations and i got exactly -602kj/mol, ur video really helped me in understanding the cycle thank u so much
naynay0x 1 year ago
That's very interesting...I've just looked up the value in 'Calculations in A-level Chemistry' by Jim Clark, and he uses a value of +844kJ/mol! In fact I think that EAs cannot be calculated independently but are actually calculated using Born Haber cycles. So it must depend upon which cycle you use as to what EA you get. Good luck with your studies, James
jamesmungall 1 year ago
excellent video series!
rojoification 2 years ago
Thankyou, this is really good, got the NaCl one but didn't get this one till i watched this vid :)
Adelllla88 2 years ago
Completely agree with other comment, thank you! :)
YankeeCat 2 years ago
These are brilliant i has so much trouble with this cycles until your videos.
THANK YOU
theageofcows 2 years ago