IR Spectroscopy - Practice Problems

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This organic chemistry video tutorial on IR spectroscopy provides plenty of practice problems that help you to identify the functional groups that correspond to a particular IR spectrum.
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29 июл 2020

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Комментарии : 140

@TheOrganicChemistryTutor 5 месяцев назад

Final Exams and Video Playlists: www.video-tutor.net/

@lubnaabdalla9925 2 месяца назад

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@peybak 3 года назад

Thanks for the video. The C=O stretch was a little off on the fourth problem @ 5:46 . I got confused for a moment ;)

@chamomile3620 3 года назад

Yuh, same

@vanessatravieso8775 3 года назад

me too! i was like looking for which had a triple bond around 2200

@joshuahering2041 3 года назад

okay good, im not going crazy, I was looking at my notes for like 3 mins like huh, then I settled for trick question, none of the above. and when he said C=O 1700 I instantly came to the comments lolol

@peybak 3 года назад

@@joshuahering2041 on a real test, the professor would have to give you that one haha. You'd have good reason to pick none of the above; I think he just slipped a little when he was drawing that 1700 stretch.

@Jdoug305 3 года назад

@@vanessatravieso8775 nerds

@shumkaming9083 3 года назад

Hello, I’m a Hong Kong student. It is sincerely appreciated that your video no matter is organic chemistry or physics. These videos totally save my college life. There is no words to express how much thankful am I.

@osaretinmichaell 3 года назад

Good Day sir. Though I may not know you, all I can is that this your channel is the BEST OR NUMBER ONE CHANNEL when it comes to knowledge. I started watching your videos since 2017, One of the reasons I graduated from college is because of your videos and teaching which was very apt for understanding. I really want to say I'm a highly grateful man, you have touched so many lives you don't know. God bless you richly sir 😭😭. I'm highly super grateful. Please don't stop for others who like me you gave hope and motivation to try better in our academics via your video. You gave touched so many lives that you can never imagine.

@b-annm5571 3 года назад

You took the words out of my mouth...He is an Angel to All of Us!

@chamomile3620 3 года назад

@@b-annm5571 YES I TOTALLY AGREE

@ahmednaeem2009 3 года назад

Real organic spectro knowledge in simple way

@lateratolosa8124 2 года назад

Thanks

@annawaters3531 3 года назад

Great content, however at 6:10 the signal is between 2000cm^-1 and 3000 cm^-1, you approximated it as 1700cm^-1.

@akabuoguchidimma9565 2 года назад

The same mistake was made at 10:02 Great content! This really broke IR spectra interpretation for me.

@tr.buuvibrian8162 Год назад

That was a big error. It also confused me. This topic is too sensitive to make such blind mistakes

@fredinaoware1459 Год назад

i was confused as well

@minatedumo2454 Год назад

At least I know I’m on the right track for noticing it .

@bradenwhite4356 10 месяцев назад

I thought I was going insane

@Iiix78 Год назад

I'm a pharmacy student and there is no words express how much thankful l am , I'm really understand IR spectroscopy 😍

@SakurabaAyane 3 года назад

Oh gawd allmaitee, I really needed this 18 months ago. You my dude, I trust your videos the most. It sucks that you didn't have the time to prep this before.

@wingwars125 3 года назад

This made the new content we had to learn for Chem A level a lottt more easier! Thanks!!!

@user-yi1mj4iu9u 11 месяцев назад

Not kidding I was doing my class lectures and text book to try and understand problems like these for 4 hours and was getting no where then I watched your two 10 min videos on IR spectroscopy and understand it. THANK YOU

@theriverglass 2 года назад

Thank you for this video! I appreciate the breakdown of how to think about IR spectra!

@albert1554 3 года назад

Thank You So Much. I Have Never Seen Any Teacher Like You

@joannaenriquez488 Год назад

i watched this very carefully and i understand now. thank you for making it easy to follow.

@bintousoumaoro8907 3 года назад

For problem #4, can you clarify this. U said the peak was at 1700 however the peak was presented after 2000, roughly 2200. Is this a mistake. This confused me as I see you had the C=O in all the answers but the peak was not presented around 1600

@frightenedusee5621 6 месяцев назад

It is a mistake

@barbiesax7743 6 месяцев назад

Yeah it's a mistake

@jovizai4593 3 года назад

Pls tell me your just taking a break... I hope you are ok.. Your the only person who makes physics and chemistry easier for me to understand :'(

@fernandocruz9882 3 года назад

Wow thanks I really needed this, You are great

@saminanoor8094 Год назад

No one can teach this better than u... literally no one

@charlesoffiong6963 Год назад

Incredible explanation! Well done!

@directioner578 9 месяцев назад

It is easier to understand with practice problems, thank you!

@aimonchok6249 2 года назад

you're the best teacher !

@padiarivanka9991 8 месяцев назад

really apreciated your video!!! i had a test tomorrow WML!!!~~

@kappa_kang60 3 года назад

I got a 96.85 ATAR thanks to this legend

@dolledby_anj2874 2 года назад

THE BEST OF THE BEST❤️ Thank you 😊

@fusionrage5096 3 года назад

I would like to thank you for making learning enjoyable for me.

@samuelwilberforce8689 4 месяца назад

we do appreciate. Thank you

@user-gj8uj9ro9d 6 дней назад

Thank you for this valuable video

@saiamitchaddha5525 3 года назад

God Is Great, May God Bless him and you all and your families

@mahdimahmoudi4379 5 месяцев назад

Very nice❤ I learn it very well, you teach better than our teacher😂 thank u🌼🌸

@mayomikunadesokan5653 2 года назад

thank you! you've saved my life man!

@gabelittlefield8890 2 года назад

I made a 102% on my 2nd Ochem exam that was majority IR/NMR thanks to you!

@reenanwa Год назад

mine is in 2 days omg

@valentinaparedes6375 Год назад

Thanks a lot, you are the best!

@safiyya4238 3 года назад

Thanks for such a helpful video:)

@aryakrishnab8361 3 года назад

Nice and informative session..😊 Thank you Sir 🤗💝

@saranmunian6376 3 года назад

It's very useful.. thanks . Then in the fourth problem there is no peak like carbonyl but u said like 1700 cm^-1.

@abigailbui5753 4 месяца назад

thank you!

@free_learning_for_all Год назад

Great content ❤ Thank you so much

@catbeefan178 3 года назад

Im always doing that in my notebook thank you you help me

@yoojinshin9314 3 года назад

at 6:20, I see the second curve as 2200 rather than 1700 C=O. Could you explain this? Thank you so much!

@IsabelHernandez-cm5bd 3 года назад

Glad i wasn’t the only one at 2200 this would be c triple bond c

@MrChaluliss 3 года назад

Our boy dun bunked the drawing up is what happened. THE FOOL.

@icewind7 3 месяца назад

you need a new glasses, that's only explanation.

@trollfake9578 9 месяцев назад

You've painted the C=O signal as in it was 2200-2300, not 1700 :(

@Gymgrl12 3 года назад

Thank you so much for the phenomenal help you have been for me !! I do want to say though, at 6:10 you mentioned the signal at approx 2200 is a C=O stretch, how could this be so or is it that you were accidentally off on the graph? Pls clarify amazing tutor!

@MasonHatfieldLogorrhea Год назад

It was a slip up

@celiareg3346 3 года назад

Thank you, this really helped I needed this for my test cause i'm in 6th grade. :D

@tekchandthakur2551 3 года назад

Really it's very helpful

@b-annm5571 3 года назад

Good morning from South Africa...Thank you sooooo much for the content and the effort to make all of us succeed in understanding what we didn't grab during the lectures. I know- I am where I am because of YOU! Can I make a request for a subject which I'm struggling with please: Separation principles. It has distillation, gas absorption/stripping, adsorption, drying, and evaporation. Many thanks for all, Regards BAM

@sukumarrakshit1714 3 года назад

Good morning from India.

@b-annm5571 3 года назад

@@sukumarrakshit1714 Good day, do you know where I can find the information above while we wait for TOCT to make those videos ? I would appreciate it a lot. I do see some of the lectures from India but they are not in English.Regards

@karunachourasia6084 3 года назад

nice explanation sir,tnq

@trentkirkwood4488 2 года назад

Number four confused me I initially chose A but then I switched to be because it looked more like something was at 1300 than at 1700. I guess spotting errors helps learn too. Maybe that was his goal.

@kantconnect3626 3 года назад

Hello there! Wonderful class But I do have a question. Please what is the name of that software you are using to write that!...... please

@lamaiyad9596 3 года назад

THANK YOU 😍😍😍👏

@johnvincebanjao2368 3 года назад

Hi I was inspired on how you make your lesson clear and presentable but may I ask what software do you use to illustrate your discussion because I will need it to my online class I hope that you reply to comment thank you.

@tokamostafa5022 3 года назад

Thanks man

@songohan393 2 года назад

thank you very much

@ericpham8205 3 года назад

The ether expansion or concentration could fool the spectroscopy if not calibrate ether before measuring

@adenoorliza8259 3 года назад

this really really helps me to understand tings that is not easy to understand just by reading. I am very grateful. do you feel the same way guys?

@giftsadique1806 3 года назад

I did watch the "Introduction Video" but I'm failing to understand how do you know that which stretch is represented a certain functional group?

@franciscoisidro3622 3 года назад

In 1:37, the option D is in alkyne terminal end, why is the wavenumber not 3100-3200? He said 2200, that’s for an internal alkyne.

@nightshiin78 3 года назад

You got me through high school, but the real question is can you get me through college?

@s.sdobledhamaka4319 Год назад

Very helpful 🙂

@t7salm3lm56 3 года назад

What website does he use???

@pi2745 2 года назад

My stupid brain understood this .. thank you soooooo much ❤️❤️

@sarahakomahmensah1449 2 месяца назад

I know right 😂😂😂😂

@souadtebbal6414 Год назад

Very intersting. How can we can compare two spectrum??????

@elijahdamien7914 3 года назад

hi sir, what online blackboard do you use?

@ramanbapir2385 3 года назад

please make a video about budans theorem

@fakhrulnawawi9681 3 года назад

Thank admin

@019saravanakumark2 3 года назад

Please full topics of post pericyclic reactions..

@kibetkevin107 Год назад

Who else is having a CAT tomorrow and therefore to get some content here

@himangimanik490 3 года назад

Very nice videoss sir

@Kimchi_69 Год назад

yeah my professor doesnt do multiple choice for the test im about to have so hopefully i remember some of this lol.

@lawrencekomane2152 2 года назад

@6:22 the stretch is of a nitrile functional group not carbonyl

@kerenhappuch5605 3 года назад

How do you make these videos? Which app do u use?

@chrislong2603 8 месяцев назад

At 9:35 how does answer choice A have an Alkane stretch? Is it because there's a CH2 bond in between the NH2 and Benzene ring?

@chrislong2603 8 месяцев назад

Oh wait, is it because the Alkane stretch is sp3?

@jayadevpal6431 2 года назад

Best one

@ribakrappaht 2 года назад

You are like Master Oogway from Kung Fu Panda as you are Wiser and have a Calm Voice !

@yasminnabila1417 3 года назад

Nice

@OrgMedChem2020 3 года назад

very good

@nasrinmeghla7270 Год назад

At no. 4, the signal was at >2000 But you said 1700cm^-1

@jonathansanchez8802 3 года назад

the goat

@user-up7pl7gj8i 4 месяца назад

7:17 that C=O stretch isnt at 1700 cm-1??

@ephraimjoashmusic3004 3 года назад

May I know what app are you using sir?

@ggroy3157 3 года назад

In Problem 4, how can the number after 2000 its about 2200 and you say that it's 1700, there is some thing wrong

@bintousoumaoro8907 3 года назад

i was going to say that i think thats a mistake on his part

@thelegendary4018 3 года назад

are you fearless fearless is a youtuber and your sound is like his sound

@nigelilagan4045 3 года назад

Can I know what kind of app you are using so I can use it too? Cause I need it for reporting please reply ༎ຶ‿༎ຶ

@szxnv 8 месяцев назад

i owe u my tuition

@areebullahmirza5579 4 месяца назад

7:10 you put the carbonyl stretch at the wrong side of 2000.

@annikaj8021 7 месяцев назад

Shouldn't 4 be an aldehyde?

@munazaahmad6063 3 года назад

IR spectroscopy helps to determine percentage composition how??

@ericpham8205 3 года назад

Time signature of signature spectrum is better

@NewWesternFront Год назад

but where is the ch2 bend on problem 2??

@JesusLightsYourPath 8 месяцев назад

Im confused because my IR chart says an OH bond is between 3200 and 3500. Not at 3000

@camiloacevedo7516 8 месяцев назад

In my IR chart, we are given three options for OH bonds. When OH is present in an alcohol, phenols (dilute solutions), it is between 3590 and 3650. When OH is present in alcohol, phenols (hydrogen bonded) it is between 3200 and 3550. When OH is present in carboxylic acids (hydrogen bonded), it is between 2500 and 3000.

@avamontgomery3750 Год назад

Wouldn't problem 5 be A because 2 peaks on the amine mean it is a primary amine? and answer D is a secondary amine.

@anjalikushwaha8184 7 месяцев назад

Answer D is primary amine as nitrogen is directly attached to one single carbon and not 2. At first I also thought the same but then after looking at it carefully I realised it just looks so because of the ring it appears as if it's attached to 2 carbon but no just 1. It's been a year though!😂