You just summarized our 3-hour lesson into 9.5 minutes

@mariadelcarmenarteagasanch8822

4 жыл бұрын

exactly, He is the best

@emteemte3985

Жыл бұрын

He is my hero chemist. I love orga.che. lab because of him

7:52 "It’s usually difficult to predict what will work best, so just try something and see what happens. " professor dave motivates

So much easier to understand than our lab manuals. Thank you!

Getting ready for the MCAT exam. Your videos are THE BEST on youtube for all of ochem and gen chem material! Thank you so much!

@kevinnguyen1133

4 жыл бұрын

Same here!

@minaabdulaal5549

2 жыл бұрын

Hope you got into med school :)

@mr.umbrella3979

8 ай бұрын

this is so sweet@@minaabdulaal5549

DAVE. Keep up the good work. Thank you so much for your contributions. You really explain things in a manner that is so straightforward and easy to follow. I appreciate you so much.

Mahal na po kita Professor Dave. Ikaw po ang pinakadakilang guro na nakakapagpaintindi saakin ng mga bagay na mahirap intindihin.

I don't know why o-chem lab manuals have to be mystery novels. Thank you for your videos!

@andym.s.5231

2 жыл бұрын

Mystery novels 😭😂😭

@patiencechepkorir5596

2 жыл бұрын

I Know right 😂😂

I'm happy you've decided to do youtube... Some of us watching you right now will become great chemists in the future, and you'll be one of the main reasons we'll manage

Since we’re on quarantine my Organic Chem lab professor is using your videos and basing the work he gives around your videos

@danielmeaders4005

4 жыл бұрын

This honestly seems like an issue of legality and compensation. The situation is the same at my university (however not for this video), I don't think your school is writing checks to professor Dave... but they are certainly getting their monies.

@XTheSpartanX7

4 жыл бұрын

i wish mine did that

@jameshall1300

Жыл бұрын

@@danielmeaders4005 it's probably kind of new legal ground to be honest. Before quarantine happened and e-learning became almost the de facto standard in most places, using internet resources so heavily in class was probably very limited. I'm not sure ad revenue really would be fair compensation for that type of usage.

thank you! prepping for lab quizzes using your videos bc they are so much easier to understand than our manuals

I'm an msc student and you helped me pass my enterance exam and now helping with my final exams in grad school, you're a life saver! :')

great for visual learners, finally a video that makes it easy to understand. thanks.

Thanks a lot man! Our schools told nothing about how this is typically used as an analytic technique

always satisfied with your explanation prof., a huge fan of you from India

Incredibly easy to understand thank you so much!

Jesus, man, your oc videos are helping me sooo much right now, thank you a lot! ❤️

well and a simple-explained tutorial. tnx, prof.!

Explaination which u gave is amazing.. u have professional teaching skill...

Thank you, your lecture is amazing, easy to understand, animation is excellent.

At the morning of my exam .. soo helpful a huge thanks to u ❤

This has changed my life

Perfect explanation. Thank you

Amazing video, thank you so much!

U r unique .i take lab abt tlc anc CC and you make it easy and clear thank you. I wish you good health and long life

Thank you for this.

This is so helpful! Thank you :)

Being a visual learner instead of trying to understand material that needs to be read, I feel that this video on TLC should be shared with students that would like a better insight/understanding on this topic. From watching this video I actually learned that the TLC plate itself has hydroxyl groups that is dipole-dipole, allowing it to interact with other polar substances.

Thank you dude, it helped me a lot

well explained! Thank uuuuuuu.

Wow sir it's an amazing lecture I have ever seen thanku so much sir ,for clear my doubts 🥰🥰🥰🥰🥰

Nice new hair-cut Dave 😊

@siddheshdeshpande3034

3 жыл бұрын

Avadli ka tula

@Jdoug305

2 жыл бұрын

@@siddheshdeshpande3034 yes I like

@siddheshdeshpande3034

2 жыл бұрын

@@Jdoug305 mr cheeks from Maharashtra

@Jdoug305

2 жыл бұрын

@@siddheshdeshpande3034 aklakam brother 😁

شكراً جداً بسيط و مختصر ❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️

man that was a great video!

thankyou, it help me so much.

I loved watching this TLC 👍

Excellent...... thanks a lot

I came back to this a few times haha... great vid

You're amazing bro god bless you

Thank you 🙏

very excellent 💙💙

in professor dave we trust

Thank you!

Brilliant!

Just Thank you ❤

What solvent would you use to prepare the samples for cannabidiols. Thank you for your class! Love learning.

Thanks professor

thank you so much! I just wanted to ask, do you benefit more from patreon or from KZread channel memberships? I really appreciate your help, this explanation was so clear

@ProfessorDaveExplains

4 жыл бұрын

Patreon takes a smaller cut so that is much better, thanks so much for your support!

Good personality with hair cut,by the way vedio is help full............

Hello Doctor I am now working on an experiment, which is to prepare Schiff bases and run by escalation with the condenser for no less than 6 hours, and I want to follow the end of the interaction with the technique TLC (The solvent used for the reaction is ethanol The question is what polar and nonpolar solvents can be used in chromatography and what ratio shows the endpoint of the reaction )

Nice easy to understand thaks

Hello Dave, please talk about Keto Enol Tautomerism

@ProfessorDaveExplains

5 жыл бұрын

check my tutorial on michael addition

Thank you for the video! One question: If you have no clue what your sample is made of, how do you know whether to use UV light, or a stain to visualize the dots? Also how do you choose the right dye? Also, what do you do if some components of the mixture only get stained by on stain, while other components only get stained by another stain? Is there a huuuuge amount of different stains the organic chemist has to experiment with or are there just a few that will cover pretty much most chemicals?

New haircut! looking good either way

Thank you

Wow what a haircut Professor! You look good either way lucky you.

Thank u❤❤❤

thank you thank you thank you

is the polarity of the samples the only thing that impacts how far each of them will travel, or does their relative mass also have an impact?

May Allah bless you and guid you to the all right thing here and and hereafter,,, all the best

*Who are you, and what did you do with Jesus?*

@-Noushin

3 жыл бұрын

🙄👉😐👉😑👉😀👉😁👉😂👉🤣

@alphagonist4748

3 жыл бұрын

👍🤣😂🤣👍🤣👍🤣💪👎🍌

@muhammadumarsarfraz4705

7 ай бұрын

What???

@c.u.v2190

5 ай бұрын

Pinned him

@jjmeducationcorner1358

3 ай бұрын

Jesus is a real savior of the world

If only this video came out a few years ago... I wouldn't have looked like such a fool in my research lab haha

1 ch number bhava ty very much😇🤗

i love you dave

nice

I had a doubt.... how to know what component has been seperated...and also what is the use of rf value

Will you be doing HPLC/GC tutorials?

@ProfessorDaveExplains

5 жыл бұрын

i hadn't planned on it, but i'll put it on the list! it is a big one.

Came in jee mains 2021 february attempt . Thanks Jesus↗↗

Спасибо!

superb presentation. and good of you to cite how TLC is a stepping stone to column chroma' ... and to work out the solvent(s) x:y ratios w/ TLC for upper half separation. eager to see the col. chr. vid's on any time-correlation in top to bottom flows vs TLC. and how you go about collecting the eluent with the separated product and nothing else. also will be listening for info on the details of how one chooses a silica mesh size. and possible re-usability of silica for those of us who know how costly that stuff is. and lastly how to choose column size vs number of grams of material to be separated.

4:56 just marking for my upcoming university course

Good

what are the methods or ways of separating plant pigments?? only TLC and paper chromatography ?? please I need help

So what is the typical solvent used for TLC? would that depend of the sample/compound to be analyzed?

@ProfessorDaveExplains

4 жыл бұрын

in the lab i would typically use a mixture of hexanes and ethyl acetate. it's kind of personal preference to an extent.

If the solvent is polar, then the polar molecules will have a smaller Rf and non polar molecules would have a larger Rf? Or is it the other way around?

@ProfessorDaveExplains

4 жыл бұрын

yes you have it right!

ME ENCANTAAAAA❣

Hello. This might be a dumb question but why does Silica (SiO2) have hydroxy groups?

Sir my compounds are non polar compounds. so which solvent do I use for dissove the compound and what solvents do I use in the mobile phase? sir can you tell me a little bit? I am facing a lot of problems in tlc checking

Sir How can I separate a mixture with 37 compounds in it using column chromatography

Sir why do we use organic solvent(toulene) as mobile phase in thin layer chromatography ?? Pls reply for this sir

@ProfessorDaveExplains

4 жыл бұрын

what else would we use?

A day before jee mains 2024

@marniejones331

26 күн бұрын

Kya mtlb Indian log smart rahte hai

Excuse me, do you know how to prepare silica gel to absorb moisture or silica gel to act as the stationary phase in thin layer chromatography. I need to make my own TLC plate

@ProfessorDaveExplains

3 жыл бұрын

Hmm no I've never made plates before. But check the tutorial that follows this one on column chromatography, it may help a little.

Please what mean tlc its same column ?

👍🏻

Why do you need a capillary tube to place the solution mixture on the plate? Can't you just use a pipette or dropper or something?

@ProfessorDaveExplains

3 жыл бұрын

the capillary tube is much better for applying the solution because you press it against the plate and it is adsorbed, a dropper would be terribly imprecise

@Ambient_Scenes

3 жыл бұрын

@@ProfessorDaveExplains Thanks for clarifying.

I’m confused to why the dots are not being places with marker but are placed with a capillary tube ??

@ProfessorDaveExplains

3 жыл бұрын

the capillary tube loads the sample onto the plate

you are so handsome and ur method is also smart and interesting.

where's Dave's hair?

Looking handsome

Like like like this

what is the point of the mobile fase? we have to optimize on the mobile fase in a project, but what does it do exactly?

🙌🏽💞

gggreat

Lets get some THC :D

Thank you Arabic

are you really professor Dave? where is your hair?

Wow nooo get ur hair BACK PLEASSEEE

TLC is so boring 😩 HPLC is way better 👍🏽