Hi thank you so much for this, just wanted to ask though is the biodegradability and recycling bit A2 cos on the spec for AQA it says it only on the a level only bit (I'm Year 1 AS by the way)
@@chemistrytutor Thank you so much for the prompt response, I'll still definitely make a note of that anyway for next year. Thanks so much for these videos, they are so helpful.
Sir, what would be the monomer for the polymer /-CN-CN-CN (- single carbon bonds-forming the *Carbon chains* and the "/" single bond on the side of each carbon end that will connect to other carbons) Would it be: H2C=CHCN or NCCH=CHCN And could you explain why? Thanks!
I'm not totally sure I understand your formula/structure of the polymer. It can't come from an alkene monomer if there are 3 carbon atoms to the repeating unit skeleton. You could only get that if the repeating unit had a chain of 2 then something(s) branching out
hi sir, quick question regarding geometric isomerism: say there is a methyl group attached to one carbon and on the same carbon another methyl, but instead of one of the hydrogens, there was for example a bromine or an iodine, do we consider the highest Ar out of all the atoms when we work our way out or just the atoms directly after as we work our way out? I hope i have made some sense with my question thanks
Yes, your question makes sense. When the two atoms directly attached to the same carbon in the C=C have the same Ar value, we look at the other atoms attached to the first. So if one group was CH3 and the other CH2Br then the CH2Br has the higher priority
HELPP PLS , AT 23:09 you said that the carbon that had originally a share of 4 electrons now has 2 , isn’t it supposed to be 3? what am I missing here . pls help .
That statement was about the electrons between the 2 carbon atoms. Originally 4e, now there are only 2 between them. You're correct about the number of electron pairs around that carvon being 3 pairs (3 of its own and 3 from the other atoms)
Water is typically a liquid form during this reaction. It's usually done at about 80-90 degrees so the ethanol product distills off but the water stays behind.
27:00 - isn't it more likely for unstable molecules to form the major product, as they require more electron density in that case??? Since the more stable element is less likely to take in the Br ion, as it's more stable - due to more electron density. ???
Good question. Less stable is less stable because it has more energy. so more energy has to go into the reactant to change it into the less stable intermediate. Imagine the reaction profile with a really high activation energy. So a more stable intermediate has less energy, so less activation energy is needed to make it in the first place
I'll add that to my list of suggestions 👍. I'm just about to finish off a halogens video now. I've got some exam question walkthroughs to make after. People have been requesting things like carbonyls and NMR recently
Best of luck with your revision! This is a catalogue of videos that might help... drive.google.com/file/d/1s3I5prjbJRR1U1lcKpXO9TQpQMaVoP66/view?usp=drivesdk
Sir you is da Goat I would like to ask you for some advice I'll be appearing for CAIE MJ 2024 As exams and we have about three months left and still haven't finished the syllabus . Im really worried that I'll mess up my grades as myself I have a strong command on very little content.Any advice on how to proceed from here or how to go on to cover the topic whether its a schedule or a rough system and any tips would be greatly appreaciated. Once again Thank You
I think you need to be systematic when you approach your learning. Make sure you've got a checklist of what you need to know and actively do some ticking off or some kind of RAG rating. Then you know where to prioritise your efforts. The closer you get to the exam you'll want to switch up and start doing more past paper questions. Then when you mark them you can see where the gaps in your knowledge are and do something about it. You have to be honest with yourself and know that you're seeking out gaps (which is scary). But once you've found the gaps, and done something about it you'll feel good. And finally, try not to stress about time and what you don't yet know. Use it as a motivator to keep you going!
this video worthy of thousands likes !! thank you soooooo much
You are very welcome
Thank you so muchhhh, thank you for making this clear and easy for me to understand, I was confused in lesson, my teacher makes it seems complex
you are a lifesaver, this is the only video i found easy to follow 🙏 thank you!
That's lovely to hear, thanks for the feedback😀
UA-cam chemistry saving my ass 😭😭 my prof was literally a ghost teacher
Glad it helped. Hang in there! 😀
great video helped consolidate information. Thank you.
Really glad it's useful 😊
Thank you for the beautiful video
You're welcome. Glad it was useful!
i cannot say thank you enough for covering everything in such detail! i'm doing ocr but there's lots of overlaps in content:)
Thank you for your kind feedback 😀
Hi thank you so much for this, just wanted to ask though is the biodegradability and recycling bit A2 cos on the spec for AQA it says it only on the a level only bit (I'm Year 1 AS by the way)
Thank you😀
Yes, you're absolutely correct that's A2. I mentioned it here to make it a clear contrast with polyesters and polyamides next year
@@chemistrytutor Thank you so much for the prompt response, I'll still definitely make a note of that anyway for next year. Thanks so much for these videos, they are so helpful.
Sir, what would be the monomer for the polymer /-CN-CN-CN (- single carbon bonds-forming the *Carbon chains* and the "/" single bond on the side of each carbon end that will connect to other carbons)
Would it be: H2C=CHCN or NCCH=CHCN
And could you explain why? Thanks!
I'm not totally sure I understand your formula/structure of the polymer. It can't come from an alkene monomer if there are 3 carbon atoms to the repeating unit skeleton. You could only get that if the repeating unit had a chain of 2 then something(s) branching out
litterally saving my organic exam rn🙏🙏
Hope it went well!
thank you sir
You're welcome 😊
Hope chemistry is still going well!
hi sir, quick question regarding geometric isomerism: say there is a methyl group attached to one carbon and on the same carbon another methyl, but instead of one of the hydrogens, there was for example a bromine or an iodine, do we consider the highest Ar out of all the atoms when we work our way out or just the atoms directly after as we work our way out?
I hope i have made some sense with my question thanks
Yes, your question makes sense.
When the two atoms directly attached to the same carbon in the C=C have the same Ar value, we look at the other atoms attached to the first. So if one group was CH3 and the other CH2Br then the CH2Br has the higher priority
@@chemistrytutor Ok brilliant, great video as usual😀
HELPP PLS , AT 23:09 you said that the carbon that had originally a share of 4 electrons now has 2 , isn’t it supposed to be 3? what am I missing here . pls help .
That statement was about the electrons between the 2 carbon atoms. Originally 4e, now there are only 2 between them. You're correct about the number of electron pairs around that carvon being 3 pairs (3 of its own and 3 from the other atoms)
Hi.
Do you have any videos on hybridisation?
Not really I'm afraid.
In this video, I go into sigma and Pi Bonding a bit, but not sp3 or sp2 hybridisation
ua-cam.com/video/81DFZQTDD2g/v-deo.html
Would water be in gas/steam when added to the ethylhydrogensulfate?
Water is typically a liquid form during this reaction. It's usually done at about 80-90 degrees so the ethanol product distills off but the water stays behind.
27:00 - isn't it more likely for unstable molecules to form the major product, as they require more electron density in that case??? Since the more stable element is less likely to take in the Br ion, as it's more stable - due to more electron density. ???
Good question. Less stable is less stable because it has more energy. so more energy has to go into the reactant to change it into the less stable intermediate. Imagine the reaction profile with a really high activation energy. So a more stable intermediate has less energy, so less activation energy is needed to make it in the first place
So it forms more readily and therefore more often
gonna use this to ace my test fr
Good luck! 👍
Thank you, sir. Your explanation is great
, but I have a question Would you explain the mall lesso because I did not understand it well
mole
Thanks for the feedback 🙂
Here you go:
ua-cam.com/video/bAa0fGNZhjM/v-deo.html
Thank youuuu sirrrr ❤❤❤❤❤
Very welcome 😀
can we follow ur channel for OCR A chem?
Yes, definitely 😀👍
Can you make videos on oxidation of alkenes,hydroboration,oxymecuration demecuration
I'll add that to my list of suggestions 👍. I'm just about to finish off a halogens video now. I've got some exam question walkthroughs to make after. People have been requesting things like carbonyls and NMR recently
Thank you very much LoL🥰 2 months to my final exams
Best of luck with your revision!
This is a catalogue of videos that might help...
drive.google.com/file/d/1s3I5prjbJRR1U1lcKpXO9TQpQMaVoP66/view?usp=drivesdk
Sir you is da Goat
I would like to ask you for some advice
I'll be appearing for CAIE MJ 2024 As exams and we have about three months left and still haven't finished the syllabus .
Im really worried that I'll mess up my grades as myself I have a strong command on very little content.Any advice on how to proceed from here or how to go on to cover the topic whether its a schedule or a rough system and any tips would be greatly appreaciated.
Once again Thank You
I think you need to be systematic when you approach your learning. Make sure you've got a checklist of what you need to know and actively do some ticking off or some kind of RAG rating. Then you know where to prioritise your efforts.
The closer you get to the exam you'll want to switch up and start doing more past paper questions.
Then when you mark them you can see where the gaps in your knowledge are and do something about it.
You have to be honest with yourself and know that you're seeking out gaps (which is scary). But once you've found the gaps, and done something about it you'll feel good.
And finally, try not to stress about time and what you don't yet know. Use it as a motivator to keep you going!
@@chemistrytutor Thank You soo much
@zhar9177 good luck 👍
Zem zide 😮😮😮 14:36
It's silly, but it helps us remember 😀👌
Can this be watched for edexcel?
Yes definitely! 😀
Chemistry is POSSIBLE!
Don't believe me? Watch this!
Do I need to rename this video title to make it just be your comment? 😀
i am so thankful for this video! you saved me!!🫶
Excellent! Hang in there 😀
I've got lots of other videos that will be useful 😁
@@chemistrytutor i will! i am german so english is not even my first language but i understood everything.
@@cverheijen4949 fantastic! I love German but couldn't put 2 chemistry sentences together in German, so well done!