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NMR Spectroscopy - A-level Chemistry

  Рет қаралды 53,478

Science Shorts

Science Shorts

Күн бұрын

Пікірлер: 45
@malaikaqaiser1349
@malaikaqaiser1349 Жыл бұрын
I've watched multiple videos for NMR and this is the only one which cleared my concepts, thank you so much!!
@theocaplowe3656
@theocaplowe3656 2 жыл бұрын
just watched this 5 mins before chem paper 3 and I got the nmr right cuz of this
@Hex-w6o
@Hex-w6o Жыл бұрын
cold
@michealadeleye7476
@michealadeleye7476 Жыл бұрын
it's an 18 min video 😂
@v.dany7568
@v.dany7568 Жыл бұрын
​@@michealadeleye74765 mins before the exam*
@ScienceShorts
@ScienceShorts 2 жыл бұрын
Sorry for the reupload!
@SciHowDoesThatWorkThen
@SciHowDoesThatWorkThen 28 күн бұрын
Really good explanation very clear- just one issue, you state if an atom has "even nucleons" it doesn't have an NMR. This is not correct, a common example is 2H (deuterium 1p and 1n) 2H is NMR active, commonly used on nearly every solution NMR experiment (the NMR spectrometer "locks" to the 2H frequency) and when students do higher level this causes confusion. A simplification is fine but it should always be correct. Suggested wording should be "an even number of protons AND an even number of neutrons does not have an NMR signal" hence Carbon-12 (6p and 6n is correctly stated as having spin-0) . This avoids having to give details but is still correct, keep up the fantastic videos!
@ScienceShorts
@ScienceShorts 28 күн бұрын
Thank you for the correction!
@keelan8336
@keelan8336 Жыл бұрын
This is better explained in 18 minutes than what my chem lab prof spent 4 hours trying to say. Sheesh, and thank you.
@ishmailkhan2791
@ishmailkhan2791 2 жыл бұрын
Thank You for saving my physics preperation, your videos were the only thing I needed to prepare for my A levels.
@Alex-rl6xy
@Alex-rl6xy Жыл бұрын
what grade did you get?
@jaskiraatshah9445
@jaskiraatshah9445 8 ай бұрын
was helpful!!! Im sitting my A levels finals 7 days from now hoping an easy nmr question to appear!!!!!
@anonymous-wt8nm
@anonymous-wt8nm 2 жыл бұрын
Thanks so much for the great content! I really do think that you should delve into more chemistry in tandem with your amazing physics videos.
@jinghan313
@jinghan313 2 жыл бұрын
Thank you, sir. This is very easy to understand. I hope you will upload other videos with harder NMR questions :) Every passer-by please check this out!
@ishqaqamar2789
@ishqaqamar2789 2 жыл бұрын
HA, for a channel named Science Shorts, your explanation sure wasn't lacking in substance! Thanks so much for all that info
@deuterium4.028
@deuterium4.028 8 ай бұрын
your voice is so nice
@randomafricana
@randomafricana 6 ай бұрын
Focus
@andywallmart
@andywallmart 11 ай бұрын
Hello, thanks for the great video, it was really helpful. However, I do have a query. At 16:10, where does the peak for the -OH go in the molecule? I didn't really understand that bit, could you please explain? Thank you again.
@lamppost
@lamppost 8 ай бұрын
it's meant to be 0 hydrogen atoms, not OH.
@SciHowDoesThatWorkThen
@SciHowDoesThatWorkThen 28 күн бұрын
This gets a little complicated. The simple answer is: The H in the -OH is often not visible and this is often the case for anything attached directly attached to an Oxygen or sometimes a N (eg NH).The reason is anything attached to a heteroatom such as O or N is "exchanging" this causes the signal to become broad and sometime so broad it vanishes. The exchange rate is affected by all sorts of things such as the solvent, pH or temperature so sometime you see them plonk it in d6-DMSO and you probably will. I think for all the examples at A-level the rule of thumb is -OHs are invisible. Additionally this is also the reason they do not couple or count for the n+1 rule.
@venomcsgo6537
@venomcsgo6537 2 жыл бұрын
7:46 how do u know that there’s another carbon to the right?!?!
@WARRIOR-bq4bn
@WARRIOR-bq4bn Жыл бұрын
because there is supposed to be an alkyl chain but we dont know how long, since there are only 4 carbons, two of which are bonded and another one that is supposed to be in a double bond, that only leaves one carbon hence CH3
@lalalajessica3752
@lalalajessica3752 2 жыл бұрын
This is a really good video! Thank you.
@tejaskumar8819
@tejaskumar8819 8 ай бұрын
8:06 bro said fairly simple, and its gonna get lot lot harder. brudda this was LOT LOT HARDER
@Auter3
@Auter3 Жыл бұрын
Thank you for the video, it is great!
@m_zayank
@m_zayank 8 ай бұрын
Can't thank you enough 🙏🏻
@IDGOCH
@IDGOCH 7 ай бұрын
Thank you so much ❤
@everythingchanges148
@everythingchanges148 Жыл бұрын
is this for CAIE ? or AQA or something else
@flamingninjas7856
@flamingninjas7856 Жыл бұрын
good stuff brother.
@milliedoyle3093
@milliedoyle3093 Жыл бұрын
great video thank you so much
@tomwormell3705
@tomwormell3705 2 жыл бұрын
Great video keep it up!
@soyadrink9831
@soyadrink9831 6 ай бұрын
nah I give up...this topic just doesn't make any sense
@randooooooooom
@randooooooooom 2 ай бұрын
Same 😢😢
@tareqahmed2517
@tareqahmed2517 2 жыл бұрын
Lovely. That's an excellent one. Try to prepare some more advanced NMR videos.
@arik9112
@arik9112 2 жыл бұрын
whyre there soo low views!
@javhus100k3
@javhus100k3 6 ай бұрын
thank you daddy
@binayadharmapala7192
@binayadharmapala7192 6 ай бұрын
What are you saying?!?!
@tomwormell3705
@tomwormell3705 2 жыл бұрын
8:06 YOU NEED TO SORT THIS OUT. IN MY 23 YEARS OF LIVING AS A CHEMIST I HAVE NEVER, EVER, IN MY LIFE SEEN A CARBON "DOUBLE BONDED😱😱😨😰" TO A HYDROGEN 🤯🤯🤯🤯🤯🤯🤯 THIS MATTER IS NOT OVER SCIENCE SHORTS UNTIL ONE OF US DIES AND I HAVE NEVER DIED BEROFRE. EMBRARESING
@ScienceShorts
@ScienceShorts 2 жыл бұрын
Sorry, where do I say that?
@tomwormell3705
@tomwormell3705 2 жыл бұрын
@@ScienceShorts Its written down
@rabiabatool1660
@rabiabatool1660 2 жыл бұрын
@@tomwormell3705 it’s not hydrogen double bonded, it’s C but he’s written H2 next to it because those two H are bonded to the first carbon
@sabeenshahid2024
@sabeenshahid2024 Жыл бұрын
​@Tom Wormell after spending 23 years as a chemist what are you doing watching an A levels chemistry video?
@MuhammadYousaf-qq3xb
@MuhammadYousaf-qq3xb Жыл бұрын
@@sabeenshahid2024 Clearly, he is looking out for future chemists studying from this channel.
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