Lec 3 | MIT 5.301 Chemistry Laboratory Techniques, IAP 2004

[dipsomaniacpupil]

thanks a lot for this!

[cyclestring]

this video is very helpful. . thanks! now I can review TLC without staring at my book for whole day. . :)

[baileyleighannify]

Yes. Thanks! My school has low tuition too but that shouldnt equate to an inadequate education. Yet, i question whether or not 'they' care if we learn ANYTHING. We recieve ZERO background info on any of the experiments. No practice or informational worksheets, no video, no powerpoint,...nada. It's difficult ot keep up especially with limited experience. Thanks again for sharing! Greatly appreciated.

[naturalfeatures]

These MIT videos have been a real life saver for me, everything from organic to physics. Now I'm watching this one again to get ready for the MCAT.

[ob2be]

these videos are sooo helpful

[Gurpreetsingh786]

Great video, it explains why you do the steps you do in TLC. Btw anyone know what the piano intro. is called? it sounds really good :)

[valeo626]

@Gurpreetsingh786 it's either debussy or ravel

[valeo626]

@Gurpreetsingh786 it's Arabesque #1 by Debussy :)

[Gurpreetsingh786]

@valeo626 Thanks :)

[hiznix]

Good Shit

[ikickrocks]

Thank you so much! :] It cleared a lot up for me.

[nao1163]

awesome video!! and hearing Debussy is defintly a plus :D

[yadirawc]

awesome loved it, happy view :)))) keep up the good work please i'll be there watching lol

[BeautifulMind1982]

WOW , WONERFUL JOB ..THANK YOU

[luckycheeta132]

goood

[mimithechat]

Where is the Advanced TLC Video?

[cyrus443]

thx a bunch..this video very useful for me...especially for my final project...

[Tiffastic]

The high tuition at MIT is worth every penny for producing great resources like this for their students. Thank you so much MIT. Other universities should follow in your leadership.

[MsGrammarnazi]

Thanks so much!

You really helped me know what I will be doing in lab.

[fh1mahfanzai]

awesomeeeee

[RatkoUSA]

Just discovered this channel by accident. Thanks, MIT, I really appreciate the effort on your part .Looks like I know what I'll be doing for the next couple weeks.

[snakeinapple]

your videos are excellent! very informative and crystal clear. the best explanation I have seen on any website. great work!

[amrsayedmotawi]

excellent video......does anybody know where we veiw the ADVANCED TLC VIDEO

[DearInsanity]

this was so useful, pretty much just wrote my lab report for me. thank you :)

[Telthecelt]

This MIT material is very good indeed and a great public service. Thank you!

[Csornobyl]

At the end she mentiones an examle to determine what is the unknown compound is made of and she does the cromatography on two different plates. But I think that she could have used one plate, smiply with A, B and the unknown. Than develop it, and with which material (A or B) the unknown is at the same height, the unknown is made of that (if it's the micture of the two than she would have seen that the unknown material formed two different spots, one in the height of A and one in the height of B)

[Telthecelt]

I tend to agree. Simply running the unknown against A and B separately should work. The only thing I can imagine is that perhaps occasionally compounds in a mixture bind to each other to give strange results. That would have been picked up in this case by the left -hand plate: if for some reason the A spot in the middle disappeared it may have been 'hidden' within the B spot. One other way around that I suppose would have been to run a plate with A, B, A+B, and Unknown. Just a guess however!

[kitkatleo]

good way to describe the tech!

[funnyken1]

thankyou very much. I have found this video very useful to me who haven't done the experiment. It help me to clear the messy theory in my mind. It is very kind of you, thankyou very much.

[funnyken1]

But what is the use of Rf value??

[iridethewave]

Rf value has many uses. For one, it is a direct and precise way to determine the relative polarity difference of two differing substances. Such information also gives one insight as to the intermolecular force strength and such things as boiling point comparisons and viscosity/surface tension.

[luuo1]

awesssomme! thannk you

[HardcoreChemist88]

Thank you for the video!

[mastermihir]

thanks, helped with my homework!

[yoshtamz]

Excellent job. So well done.

[gnnr103]

thank you

[raystem69]

Excellent video. I've learned a lot about tlc. Please make more.

[raystem69]

Excellent video. I've learned a lot about tlc. Please make more.