by only watching your videos and of course doing exam styled/past paper questions I managed to go from E\D's to A's, hoping for an a* now which I never use to think was possible given I attained a 5 at GCSE and the real difference that boosted my grades is your videos, literally wasn't even a gradual boost of E to C to B to A it was just zoom E to A 😂😂THANK YOU SO MUCH!!!!!!!!
Have never been able to understand acids and bases but this was fantastic video, fully understood the whole way through even buffers which I couldn’t even start to wrap my head around before. Got chem paper 1 in 34 hours and this might just have saved it👏👏
I'm about to go through all your AQA a level Chem vids since its close to exam time, you're awesome and the vids help me understand and explain so well, I can't thank you enough for the time you put into these videos :)
Excellent video with very effective slides and clear and lucid explanations throughout, no more so than explaining how buffers work and calculating pH changes in buffers which is always a difficult concept to understand.
You’re a God send sir. Chem paper 1 in 2 days and I’ve been watching your videos which finally explain hard topic properly. Haven’t had a sufficient chem teacher for the whole of year 13 so if I pass you deserve much of the credit. Thank you for your service, truly appreciate it.
great video - a little mistake i noticed tho 22:33 it should be [H+]=2[Acid] for diprotic acids not 2[H+]=[Acid] otherwise that means you will have to divide by 2 not x2
At around 58:52 the titration curve for ethanedioic acid begins at around pH 1. Is this not incorrect as ethanedioic acid is an organic acid so would have a higher pH value?
Shouldn't the concentration of H+ ions be twice the concentration of the acid for Diprotic acids rather than the other way round? Since there are two H+ ions for each Acid molecule 22:25
Yes that’s what I was confused by. The video is wrong here, even checked in the CGP revision guide which says [H+] = 2[HA]. It’s one of the tips on page 100
I completely forgot about diprotic titration curves. Oh and i believe is that the def of buffer solution states that they also resist the change of ph when water is added to it as well. But regardless, Thank u for the video
at 1:13:23 i don't understand why the HA concnetrations it that instead of 0.0051, i thought you had to find the excess moles first before calculating the H+ cocnnetration
This video has been super helpful! However, I wondered whether there was a bit missing in the presentation on Arrhenius plots and different indicators? Do you have a video on that as it's really difficult? Thankyou
9:02 I have a question, how come you haven’t written shown the addition of water for the equations for the acid/base types disassociating for the first 3 types, but have written the water for ammonia? In an exam if you were asked to show the disassociation equation of acids or bases, would you show the water? And do they have to react with the water to disassociate ?
Yeh it is mentioned in specification point 3.1.12.4 - Weak acids and bases Ka for weak acids. They can get you to work out pH at half neutralisation point, this can include a pH curve as you are expected to know about these curves too. 👍
Bit late but you cant assume that the conc of H+ is equal to HA because they don't fully dissociate but we can assume that the conc of H+ is equal to A- because all of the H+ in the solution came from the acid creating an equal amount of H+ and A-
by only watching your videos and of course doing exam styled/past paper questions I managed to go from E\D's to A's, hoping for an a* now which I never use to think was possible given I attained a 5 at GCSE and the real difference that boosted my grades is your videos, literally wasn't even a gradual boost of E to C to B to A it was just zoom E to A 😂😂THANK YOU SO MUCH!!!!!!!!
hey i just wanted to congratulate you on that!! that's amazing i've seen similar progress its nice too see these videos working for us all :)
Flippin hell I needed this comment to give me motivation, I'm struggling ::((
@@uzytube6751 you've got this, little progress is still progress. you'll be so grateful you didn't give up in the end
@Allery chemistry
I'm in the same position you were in. This gave me a lot of motivation to get that A. Thanks
I've gone from literal E's all through Y12 to solid A*'s now, thank you so so so much, your amazing!!!
Quite a turnaround! Well done you 👏
Damn I want to be you😢
if only allery chemistry was my chemistry teacher.. but honestly these videos are class thank goodness i found this back in year 12 !!
Thank you! Pleased you're finding the videos helpful! 🙂
I cant explain how helpful these are, i only wish i knew about you last year- i am telling my friends to use your videos. thank you
literally. these are like the best
Have never been able to understand acids and bases but this was fantastic video, fully understood the whole way through even buffers which I couldn’t even start to wrap my head around before. Got chem paper 1 in 34 hours and this might just have saved it👏👏
Me too lol! I just wish I had found this channel when I started A Level Chemistry! Good luck tomorrow😀
Good luck! I am in the same boat
what grade did u get
He's got brain and sense of humour *stops the lesson to let us hear the ice-cream van*
I'm about to go through all your AQA a level Chem vids since its close to exam time, you're awesome and the vids help me understand and explain so well, I can't thank you enough for the time you put into these videos :)
You're welcome 😊
Excellent video with very effective slides and clear and lucid explanations throughout, no more so than explaining how buffers work and calculating pH changes in buffers which is always a difficult concept to understand.
You're very welcome!
all i’m using to revise for my actual a level in 2 days, coz it’s all i need
same
same!
How did you do?
Great Video as always sir, but on the behalf of my A Level chemistry class would u mind doing a video explaining back titrations?
Hi
You’re a God send sir.
Chem paper 1 in 2 days and I’ve been watching your videos which finally explain hard topic properly. Haven’t had a sufficient chem teacher for the whole of year 13 so if I pass you deserve much of the credit.
Thank you for your service, truly appreciate it.
did bro pass
how did u do?!
22:20, *correction: [H+] = 2[ACID]
Awesome sir ..thanks for helping us alot
It's my pleasure
You have nio idea how much your saving me right now, you deserve millions of sub for the work you're doing honestly 😭🤞🏽
Thanks very much 😊
great video - a little mistake i noticed tho 22:33 it should be [H+]=2[Acid] for diprotic acids not 2[H+]=[Acid] otherwise that means you will have to divide by 2 not x2
was abt to say the same thing
Thanks for your input, all noted. 👍
you’re the best , god bless you🙏🏻🙏🏻 i’ll pass chemistry cuz of you
These are honestly my life line getting through a level chem✨🙏🏼
At around 58:52 the titration curve for ethanedioic acid begins at around pH 1. Is this not incorrect as ethanedioic acid is an organic acid so would have a higher pH value?
my goat
i believe doing this video multiple times will get me ready for exams. Thank you so much sir
Shouldn't the concentration of H+ ions be twice the concentration of the acid for Diprotic acids rather than the other way round? Since there are two H+ ions for each Acid molecule 22:25
Yes that’s what I was confused by. The video is wrong here, even checked in the CGP revision guide which says [H+] = 2[HA]. It’s one of the tips on page 100
For the calculation of pH of strong bases you could just calculate ph normally then sub from 14, this may be easier !
Thank you so much sir!! Your explanations were AMAZING
The half neutralisation point can be used to calculate pka of a strong acid rather than weak acid by taking the pH at this point
thank you Hashem i found this
my alevel is tomorrow, i so wish i found this channel earlier than a week ago 😭 the last minute help has been amazing, manifesting that grade B
Hope it went well today 👍
I completely forgot about diprotic titration curves. Oh and i believe is that the def of buffer solution states that they also resist the change of ph when water is added to it as well. But regardless, Thank u for the video
Amazing video. Understood it so much better than in class!
at 1:03:57 if more of the acid is produced wont the equilibrium shift right because it will try to counteract the change?
I'm also confused about this :(
These videos are so so helpful with revision, thank you so much!!!
Allery chemistry solos no diff
thanks brother this was difficult topic :)
39:28 Don't forget about the no-en concentration guys
what do you mean?
CHRIS, YOU LEGEND
Should the H2o be squared at 14:57 on the denominator?
No it has to be like that
at 1:13:23 i don't understand why the HA concnetrations it that instead of 0.0051, i thought you had to find the excess moles first before calculating the H+ cocnnetration
Thank you, I finally understand this topic
This video has been super helpful! However, I wondered whether there was a bit missing in the presentation on Arrhenius plots and different indicators? Do you have a video on that as it's really difficult? Thankyou
thank you so so so much!
You are the best
9:02 I have a question, how come you haven’t written shown the addition of water for the equations for the acid/base types disassociating for the first 3 types, but have written the water for ammonia? In an exam if you were asked to show the disassociation equation of acids or bases, would you show the water? And do they have to react with the water to disassociate ?
not sure if you're already done your exams but ammonia needs water as it doesn't hvae OH- so it will react with H2O to produce OH- ions
half neutralisation point isnt in the spec or cgp book, like I havent seen that word, do I need to know it 100%
Yeh it is mentioned in specification point 3.1.12.4 - Weak acids and bases Ka for weak acids. They can get you to work out pH at half neutralisation point, this can include a pH curve as you are expected to know about these curves too. 👍
@@AlleryChemistry alr sn
Thank you!❤👌
You're welcome 😊
ily tysm
excellent video!
thank you!
31:44 lol how can people forget to square root the squared symbol
I have bad eyesight, okay?
correction at 32:07 its 5.28x10 -6 not 5.28x10-7 ???
@32:29 I thought for weak acids we can't assume concentration of H+ is equal to concentration of A-
Bit late but you cant assume that the conc of H+ is equal to HA because they don't fully dissociate but we can assume that the conc of H+ is equal to A- because all of the H+ in the solution came from the acid creating an equal amount of H+ and A-
mums life patterned me
fr
bruv am i cooked idk what topics to do
41:21
🐐🐐🐐
1:10:18
PlZ do a video on organic chemistry
Organic ones will start to come out on Saturday! 👍
@@AlleryChemistry thnx a lot
Hi Sir James allery III, you made mistake L + ratio brother :)m