Allery chemistry was the reason i got my A grade in chem back in 2016. Ty so much!
@AlleryChemistry4 жыл бұрын
You're very welcome!
@Annnabannanna2 ай бұрын
Thank you so much for this channel. The night before chem paper 1, and this is the FIRST time I've ever fully understood this and am able to label and get these type of questions right. I've never gotten this, my teacher just moved on so fast and assumed we all understood. Big thank you for going through the nitty gritty, and the whole concept. You've literally carried my alevels. Acids was another topic I absolutely sucked at.
@AlleryChemistry2 ай бұрын
Ah thanks for that. Hope your exam went well today.
@rkaur61662 жыл бұрын
Making the notes from Chemguide come alive, great for students 👌
@amaankhan58572 жыл бұрын
imma give u the glug glug 3000 after my A levels
@shazilmalik9172 жыл бұрын
Me first
@PetrolDemon3 ай бұрын
not sure it was mentioned in the video but useful to note - enthalpy change of dissociation is the opposite of lattice enthalpy!
@rkanandan3 жыл бұрын
Beautiful explanations this has been saving my A level chemistry thank you so much for this
@beagematgcsechem35053 жыл бұрын
The Born-Haber cycle for MgO is wrong at 28:17. Thanks for the otherwise amazing video though! :)
@neithonosmani97832 жыл бұрын
Why is it wrong?
@Sarah-lk8fe2 жыл бұрын
Yeah I agree as well, the Born-haber cycle for MgO is wrong. Everything else is perfect though 😁 thank you.
@DhruvShetty05 Жыл бұрын
@@neithonosmani9783 there is an LiCl at the bottom
@purplesorcerer21723 жыл бұрын
thank you so much for everything you do its incredibly concise and helpful
@ImMata2 жыл бұрын
Lettuce enthalpy
@aaminahsarfaraz4304 Жыл бұрын
This was so useful! Thanks :)
@AlleryChemistry Жыл бұрын
Glad it was helpful!
@sachinbhandari35063 жыл бұрын
You have helped me greatly thank you
@AlleryChemistry3 жыл бұрын
No problem!
@naomiosinloye63494 жыл бұрын
This is so helpful thank you!
@AlleryChemistry4 жыл бұрын
Glad it was helpful!
@monisamujawar22323 жыл бұрын
36:53 if the calculations, the value of lattice enthalpy of dissociation is negative (given or calculated), do we reverse the signs or keep it as it is??? PS. Thanks for your video. They are really helpful
@jds51423 жыл бұрын
Would we need to be able to construct a Born-Haber cycle from scratch (provided they didn't give us one in the question) with the arrows pointing the correct direction (due to the exothermic or endothermic nature of the enthalpy change they represent) and the higher energy arrows positioned above the lower energy arrows? I've checked the specification and I can't seem to find anything
@tapkoang3 жыл бұрын
Great video 👍 thanks Sir 👌
@AlleryChemistry3 жыл бұрын
Welcome 👍
@em81363 жыл бұрын
What do you mean by adding all the numbers to equal zero?
@user-zo7oq6ts5y3 жыл бұрын
you start anywhere on the cycle and add all the values, keeping the sign the same if you're going with the arrow or changing the sign if going against the arrow. If all the values add up to 0, including the lattice enthalpy worked out, you most likely got the right answer :)
@khan99ish7 ай бұрын
at 20:12 I'm a bit confused as to why the value is halved Because 1/2Cl2 turns into Cl which for both is just one Chlorine atom
@rubiksworld21705 ай бұрын
The table shows the enthalpy of atomisation of Cl2 not just Cl. So halving would give you the correct value!
@TheStuntman823 жыл бұрын
A1 would be better, A19 has toll charge
@deuterium4.02810 ай бұрын
hello, doesn't the increasing/decreasing number of protons also affect the lattice enthalpy(as well as ionic charge and ionic radius)?
@i.a5902 ай бұрын
idk about the number of protons but if you do ocr a then all you need to explain is the affect of ionic charge and ionic radius xx
@lilytaylor97202 жыл бұрын
why do you atomise chlorine before lithium? does the order of which you do it matter?
@rubiksworld21705 ай бұрын
You’ve probably already done your exams lol, but for anyone else seeing this the order doesn’t matter - I asked my teacher!