You're the best. I was struggling trying to understand from my professor but you made everything much easier to understand- love the color coding!

@Leah4sci

2 жыл бұрын

So glad to hear that I helped you to understand! And I love the color coding, too! Glad you liked it!

Your videos get me through orgo! When I sent you my syllabus I didn’t know you would respond with a video so fast! Thank you sooooo much! 🙌🏻🙌🏻🙌🏻

@Leah4sci

4 жыл бұрын

You're very welcome! While I can't match everyone's schedule I do try to look for patterns of what students are on when sharing resources

Thank you very much! your short video helped me understand more than I could in my class's 1 hour lecture video.

@Leah4sci

4 жыл бұрын

You're very welcome! So glad to help!

This is the best explanation I have seen thank you!

@Leah4sci

3 жыл бұрын

You're very welcome!

mind blown - its all coming together thank you

@Leah4sci

3 жыл бұрын

You're so welcome!

I took a electrodynamics physics course so this material came fast and easy to me. If you understand resonance and the effect on a magnetic field that a moving charge has in space, then the basic concept around nmr is only a "real world' application to said theory. However, the multiple examples that are present regarding functional groups and those that go against normal intuition are needed to be studied. You managed to put all those in a nice simple package. Thanks!

@Leah4sci

2 жыл бұрын

You're so welcome!

Leah, I don’t know if you will see this but you are actually the best. I hated organic chemistry I , but I decided to start spending a lot of time reviewing for organic chemistry II. And your videos have helped TREMENDOUSLY. thank you for that. I love you.

@Leah4sci

Жыл бұрын

I am seeing this!! And you're very welcome! I'm always glad to help!

This is a clear explanation, I wish had know about these earlier.

@Leah4sci

3 жыл бұрын

I'm glad it helped you understand now!

You are teaching awesome with very simple method. Anyone can catch it easily. And thanks

@Leah4sci

4 жыл бұрын

Thank you! That is my goal, glad it's helping you learn

Thank you so much! I have watched all this playlist and found it extremely clear and helpful 😃 please make a playlist also on UV Vis, IR and other spectroscopic spectra😃

@Leah4sci

Жыл бұрын

So glad it helped you! Regarding the playlist suggestion, thanks for the recommendation. I post free videos as I have time and am always looking for suggestions. For more help with this topic in the meantime, contact me through my website: leah4sci.com/contact

Leah, you’re simply the best. Thank you so much !

@Leah4sci

Жыл бұрын

You're so welcome!

Spectacular tutorial. Really great!!!!

@Leah4sci

9 ай бұрын

Glad you liked it! Thank you so much.

This video taught me more than 3, 2 hour lectures.

@Leah4sci

Жыл бұрын

Always happy to help!! Thanks for watching. :)

Thanku Leah for clearing my doubts you're awesome 👌👌👍

@Leah4sci

4 жыл бұрын

You are very welcome Pranav

This video helped me so much! Thank you!

@Leah4sci

8 ай бұрын

You're so welcome! I'm glad it helped you!

you're such an amazing teacher..thank you

@Leah4sci

Жыл бұрын

Thanks so much! I'm glad you liked the video. :)

Thank you for helping me through ochem this semester!!

@Leah4sci

3 жыл бұрын

You're very welcome!

So helpful, thank you so much!

@Leah4sci

6 күн бұрын

You're so welcome!

Very useful video, thank you so much!!!

@Leah4sci

3 жыл бұрын

You're very welcome!

Make more spectroscopy videos for us professor!! And thanks for this video.

@Leah4sci

3 жыл бұрын

You're welcome and thanks for the recommendation. I post free videos as I have time and am always looking for suggestions. For more help with this topic in the meantime, contact me through my website: leah4sci.com/contact

This was so helpful!

@Leah4sci

3 жыл бұрын

Glad you like it!

this was so helpful, thank you

@Leah4sci

7 ай бұрын

You're very welcome! Glad it helped

Bless up Ms.Leah

@Leah4sci

Жыл бұрын

Thanks!

Very very thanks for your teaching🙏🙏

@Leah4sci

Жыл бұрын

It's my pleasure!

Friendly tip for those who are solving with area: The area is a solved integral for under the peak of the graph. In order to find the number of hydrogens corresponding to that peak, just sum up the entire area of the graph, and then multiply by the integer for which you want to find out the number of hydrogens. Took me 6 hours and a lot of nerves of why i can't solve a simple H-NMR...

@Leah4sci

Жыл бұрын

Great tip. Thanks for sharing.

@avinashajmera2775

Жыл бұрын

can you please elaborate below line either with example then multiply by the integer for which you want to find out the number of hydrogens

Thank you very much, you are really doing a lot😘

@Leah4sci

4 жыл бұрын

You're very welcome!

amazing video. so helpful.. thank u

@Leah4sci

3 жыл бұрын

You're so welcome!

Thank you so much ma'am. For this video.

@Leah4sci

Жыл бұрын

You're welcome 😊

Fantastic work

@Leah4sci

2 жыл бұрын

Thank you!

I luv this, helped so much

@Leah4sci

2 жыл бұрын

So happy to help!

omg this video is so simple but so helpful I love u lol

@Leah4sci

3 жыл бұрын

You're welcome! Glad you liked it!!

Thank you for making the video. A question: how do you know the 1H, 1H, 2H, 6H,3H at the beginning?

@raeanne5793

3 жыл бұрын

I believe that those are given in order to solve.

@andrepadilla9089

3 жыл бұрын

Yes they are

@Leah4sci

3 жыл бұрын

That is information given to us by the instrument itself. The area under any given signal (integration) is proportional to the number of hydrogens which that signal represents.

1st comment. Leah is the best, your MCAT book is so informative and concise love it♥️

@Leah4sci

4 жыл бұрын

Thanks so much! So glad my online resources (videos + MCAT guide) are helping you on your journey to medical school :)

May God bless you!

@Leah4sci

3 жыл бұрын

Thank you!

I luv u Leah~~~ U r truly amazing THX!!!

@Leah4sci

3 жыл бұрын

Awww, you're welcome!

you are the best teacher

@Leah4sci

Жыл бұрын

Thank you for the compliment!

Amazing ❤

@Leah4sci

4 ай бұрын

Thanks 😄

I really like this one

@Leah4sci

2 жыл бұрын

Glad to hear it!

After like 20 problems of nmr I’m finally freaking doing it

@Leah4sci

2 жыл бұрын

YAY!!!

WOW ! Thanks a lot

@Leah4sci

Жыл бұрын

You are welcome!

Im crying, finally understand this part

@Leah4sci

Жыл бұрын

Aww, so glad I helped clear it up for you!

Hi Leah! Could you also do H-NMR together with IR data when predicting molecular structure? Thank you!

@Leah4sci

4 жыл бұрын

Alas that would take way too long. However I do cover that in the orgo study hall leah4sci.com/join

Please do videos on C-NMR as well

@Leah4sci

7 ай бұрын

I plan to, soon

V nice discription... One thing I wanna ask is how to produce this screen... Have you opened it with paint and recorded it?

@Leah4sci

3 жыл бұрын

Glad you liked it!

I need IR spectroscopy video lecture!! Mam !!! Is there any video on IR if yes than share kindly Thanks

@Leah4sci

7 ай бұрын

It's on my list! Stay tuned

Hi can u made a vedio on how we determine steroids biosynthetic pathway in plants it's technique in lab practically.. and how we make sample and check in NmR spectroscopy

@Leah4sci

Жыл бұрын

Thanks for the recommendation. I post free videos as I have time and am always looking for suggestions. For more help with similar topics, contact me through my website: leah4sci.com/contact

Well...even my professor hasn't explained all of that, so thank you.

@Leah4sci

2 жыл бұрын

You're very welcome!

sorry i know this might be a dumb question, but its the only part im confused of.......the video at 5:13 says the only option is CH on one side and CH3 on the other because we dont see another CH2, so lets suppose if we dont have the H ratio here, then how are we suppose to know it have to be CH and CH3? thanks

@Leah4sci

5 ай бұрын

Not a dumb question at all. Some professors will provide ratios, others will teach integration. In the case where you don't have either you have to use the clues within the peaks. For example if you know one carbon has 3 neighbors and the other has 2, if there is nothing else you assume they neighbor each other giving you a CH2 and CH3 (or CH4 and CH6 as a 2x ratio...)

thank you mis

@Leah4sci

2 жыл бұрын

You're so welcome!

Correct me if i am wrong...but OCH has a peak near 4-6 ...but u mention it to 3.1

What about the hetereocyclic fused aromatic rings that come with a low resolution nmr graph ? You got to make this closer to what we see in exams

@Leah4sci

2 жыл бұрын

I'm sorry, but I don't offer tutoring over social media. My free KZread videos are shorter and less involved that what you'll find in my Study Hall. For help with questions like this and more, I recommend joining the organic chemistry study hall. Details: leah4sci.com/join or contact me through my website leah4sci.com/contact/

Thank you madam from India

@Leah4sci

3 жыл бұрын

You're very welcome!

Looking at something like 3-methyl-1-butanol, why do the read number of hydrogens not always match what's actually on the compound?

@Leah4sci

3 жыл бұрын

Great question! Unless the solvent protons are allowed to interfere, the number of hydrogens in the structure should match the number of hydrogens given by the integration of the peaks.

Hey this may seem like a silly question but how can u figure out how many H corresponds to each peak? e.g. 6H, 3H

@mitchw7860

2 жыл бұрын

This is given by the integration value of the peek. Usually in a test or problem this will be given.

@Leah4sci

2 жыл бұрын

Mitch W is correct on this one. To find the number of hydrogens for each peak, you need to integrate under the curve. The intensity of the signal is directly proportional to the number of hydrogens that create the peak. Usually, this information is provided by your professor and not something you would find or calculate.

took a momment to get it, but I appreciate the ghost carbons shown!

@Leah4sci

6 ай бұрын

You're welcome!

Hello Mrs , i just wanted to to tell you that you saved my exam I am certain that I will do really good on it . Actually listening to 16 carriages by beyonce , she so cool i would also like to meet JAY-Z he seems fire. To be totally honest I have no idea to what I would do for the rest of my life , but I am confident in myself . I will become an actor or something like this i know I will make it. But anyway I am actually writing those few lines in pittsburgh. i am just a FOB can I just live lol , life is so out pocket. When life gives you lemon make a Mojito out of it. Sincerely Ismail Safy, Futur Emmy and Oscar winner I will make evryone proud AF. Kisses n Love

@Leah4sci

3 ай бұрын

So glad to hear that I could help you with your exam and your dreams!

How would you go about interpreting peaks if not given integral spaces or H atoms present and only given the formula of the molecule?

@Leah4sci

4 жыл бұрын

That's a more advanced question in which you first have to figure out the H ratio for each peak. (I don't currently have any videos on this)

@meditip887

Жыл бұрын

By intergal height.

For example if we have carbon 1 and carbon 2 carbon 1 three hydrogens and carbon 2 has three hydrogens so the hydrogen of carbon 1 do not affect the splitting of hydrogen of carbon one which are another???

@Leah4sci

3 жыл бұрын

The splitting of any given peak on an HNMR spectrum is attributed to the number of ‘neighboring’ hydrogen atoms. In your scenario, it would be the three hydrogens on carbon 2 that would affect the splitting of the signal for carbon 1.

What does an h-nmr machine cost? And second hand? Can you build it yourself?

@Leah4sci

4 жыл бұрын

No idea!

what do the h3, h6 on top of the peaks mean?

@Leah4sci

Жыл бұрын

They tell us the number of hydrogens in the molecule that are represented by those respective peaks. Those numbers are found by integration under the peak, and is information usually provided to you by your professor.

mam would you help me in solving mcqs related to nmr ?

@Leah4sci

3 жыл бұрын

I'm sorry, but I don't offer tutoring through KZread comments. For help with questions like this and more, I recommend you join the organic chemistry study hall. Details: leah4sci.com/join or contact me through my website leah4sci.com/contact/

Tomorrow is my exam and this video taught me what my teacher forgot to teach.

@Leah4sci

Жыл бұрын

So glad to hear I helped fill in the gaps for you!

Hello! What happened to the ch2 next to the red ch3

@Leah4sci

3 жыл бұрын

Thanks for your question! The hydrogens in the -CH2- group are depicted by another peak on the spectrum, the blue one right under 2 ppm. Remember, the splitting of the peak helps us identify how many neighboring hydrogens each group of equivalent hydrogens will have. Since the red peak was a triplet, we knew it would have 2 neighboring hydrogens.

How do you know how much H each peak has for example the green pne has 6 H.

@leonunyabusiness6966

3 ай бұрын

The integration (area under the curve) is a relative amount of how many H atoms are represented by a single peak. She just decided to give us the exact number in this case. Typically there would be a simpler graph showing the relative amount if the exact amount isnt given

@Leah4sci

3 ай бұрын

This is often given at the undergraduate level. The other option is to learn and study integration heights

My prof told us to not watch your video because he said you are wrong in the H NMR spectroscopy topic haha but I am doing it anyways lmao

@Leah4sci

7 ай бұрын

Oh? What does your professor not like from my videos?

why is the green peaks 6H? don't even understand this from the start.

@TheRavenlhelix

3 жыл бұрын

That's given information from the chart. You don't have to figure out that that doublet has 6H. You just need to know where those H's go, and that it has one neighboring H group.

@Leah4sci

7 ай бұрын

Exactly! I have a couple of videos here on this topic that take you back to the beginning

You said all the carbons are a counted for but where is the 6th you didn’t mark anything at 6:37

@Leah4sci

Жыл бұрын

There are two equivalent green carbons that are identified by the green peak in the spec. Make sure you count that peak as two carbons!

Please explain C-NMR

@Leah4sci

3 жыл бұрын

I'm sorry, but I don't offer tutoring over social media . For help with questions like this and more, I recommend joining the organic chemistry study hall. Details: leah4sci.com/join or contact me through my website leah4sci.com/contact/

Ok this isnt jiving with your previous hnmr videos. You taught in your previous videos a double has 1 neighbor so why does green section have 2 carbons with 3 hydrogens each meaning 6 neighbors

@Leah4sci

3 жыл бұрын

The green peak is representative of the 6 equivalent hydrogens that are also drawn in green. (Yes, those hydrogens are bonded to two separate carbons as CH3 groups. However, they are still equivalent.) Then, those 6 hydrogens in green have only 1 neighboring hydrogen, and you can see that drawn in gray as -CH.

Mam we need questions to solve please add quiz

@Leah4sci

3 жыл бұрын

Check my syllabus guide for more resources: leah4sci.com/syllabus

What about 13C-NMR?

@Leah4sci

2 жыл бұрын

I haven't done videos on that yet

@thedailydoc

2 жыл бұрын

@@Leah4sci I already passed my MCAT 🥳

Why does the green one has 6 H???

@Leah4sci

5 ай бұрын

The number of hydrogens written at the top of each peak tells us how many hydrogens are represented by that signal. The green peak represents the six hydrogens at the terminal end of the isopropyl group, and they split into a doublet as a result of having only a single hydrogen neighbor.

❤❤❤

❤️

@Leah4sci

3 жыл бұрын

:)

👍

@sirmutbussimali3440

10 ай бұрын

Mam i need your help... Reply me

@Leah4sci

10 ай бұрын

I don't offer tutoring over social media. For help with topics like this and more, I recommend joining the organic chemistry study hall. Details: leah4sci.com/join or contact me through my website leah4sci.com/contact/

you're missing the DBE

@Leah4sci

3 ай бұрын

Thanks for pointing it out. At which part of the video?

I have a doubt

@Leah4sci

4 жыл бұрын

I have many...

@randomeme3484

4 жыл бұрын

@@Leah4sci nice one

👍👌💐

@Leah4sci

2 жыл бұрын

:)

I’m still confused asl

@Leah4sci

Жыл бұрын

I'm so sorry! For additional help with topics like this and more, I recommend joining the organic chemistry study hall. Details: leah4sci.com/join or contact me through my website leah4sci.com/contact/

Thank you for your services🫡 exam is in 1 hour and after watching so many videos, I finally get it!

@Leah4sci

8 ай бұрын

Awesome! Hope it went well for you!