Optical Activity and Optically Active Molecules

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[@samtheham111]

you deserve a trophy for your teaching

[@nishantupadhyay3480]

Thank u ...u r one of the few teachers I have found who has crystal clear knowledge of the topic they cover..

[@syedtauha4001]

I swear I've read it a 100 times and now i came to know what the concept actually is.. Thank you Andre sir

[@rajanyasarkar242]

You are amazing! I am a college freshman and I love your style of teaching. Keep teaching us and our learning won't stop in this pandemic.

[@Caleb97Kim]

Very grateful for your clear and simple explanation of what used to be a complicated topic for me! Thank you!

[@AKLECTURES]

Great to hear Caleb!

[@93rishitaahlawat59]

Concise with all the needed infromation . Love the quality

[@TheHitomiKanzaki]

Thank you ! This is an excellent video that simplifies a concept my teacher struggles to teach and have us understand. It was poorly explained in my textbook and you clarified so many aspects! Great work.

[@brooklock8867]

Why one anantiomer rotate light in one direction and the other enantiomer rotatae in another direction

[@AKLECTURES]

i really appreciate that, thanks.

[@Glubbi]

Great work there Andrey, keep it up! Thank you so much, you really did help me out many times ;)

[@1fenash]

Good job at explaining such concept, I like that your videos short and to the point, keep them up...
Thanks

[@AKLECTURES]

fenash1 You're welcome! :-) and thank you!

[@Omer111ism]

Thanks for the video. Summarised and informative.

[@sanjanadevivm7254]

Thank you so much sir...your explanation helped me a lot..

[@Yausifs]

You're an amazing teacher! Thank you! =D

[@AKLECTURES]

Thank you for the kind words Sandy! Awesome to see you're finding my lectures useful :)

[@AKLECTURES]

Thank you Adnan.
Glad it helped :)

[@kklol07]

i want to thank you SO MUCH for this sir!, i loved this

[@sherin__shana5173]

Thank you sir🤍

[@mohamedchanfioumkouboi6443]

thanks for the videos
I am in preparation of my exam... very beneficial videos.
THANKS

[@nyvek1706]

muito bom, mestre!

[@timgruterich9637]

Excellent Explanation !!!

[@AKLECTURES]

Thanks!

[@MarieBai]

Why is the optical activity of a molecule important? Why real life application do we use it for? Thanks for the video!

[@anashesham]

great video, helped me to understand a lot. Thanks :D

[@vipinsharma9342]

you are a great teacher sir.

[@downandout9753]

but; how does it do it? meaning how does the molecule rotate the photon.

[@emirhanturan5682]

Very nice video ! clear and nice explanation !

[@LenaVxoxo]

OMG YOU R GOOD!! I UNDERSTAND EVERYTHING NOW OMG OMG THANKS!!

[@AKLECTURES]

Thats awesome Lena :) Im glad!

[@alanoudnasser896]

Thank you very much...good teacher..good work..💜

[@haha7509]

Awesome!

[@thatbossguy123]

thanks Andrey!

[@AKLECTURES]

Thank you :)

[@niteshapaatil4389]

Thnks sir! An excellent video lecture!! 😊

[@eragon2121]

Thanks for the video, but I still don't get why it always rotates it like this. I mean, say 4 in the picture drawn is an oxygen with a dense electric field, wouldn't the electric field rotate towards us, coming out of the white board, for both molecules? I get that the rotation happens, I just don't understand the physics of how and why this rotation happens.

[@shavezmalick9689]

this may help :
physics.stackexchange.com/questions/15503/how-do-optically-active-compounds-rotate-plane-polarized-light

[@oldman3695]

brilliant ..brilliant
.. brilliant 👏👏

[@bryansimmons9859]

Great video. Thanks!

[@AKLECTURES]

Thanks Bryan!

[@jlahmed]

Thank you, great explanation

[@omarmero5036]

عاش اوي ..هداك الله

[@ayeshaamjadali1026]

Thank you so much ❤️

[@hafizrustam8422]

very gud biochyme teacher thnk u so much u made my work easy god bless

[@AKLECTURES]

thank you!

[@lulua.6748]

Thank you so much. Great explanation ^_^

[@AKLECTURES]

Thanks Lulu! Glad you thought so! :)

[@RuhinShahebOfficial]

Nicely presented

[@jesscai3308]

you are freaking awesome!!!! thank you sir!

[@AKLECTURES]

lol thanks Cai! :)

[@mozat9499]

thank you!

[@arachan5280]

thank you very helpful

[@samsonolubunmi3768]

Please I need examples of dextrorotatory drugs and levorotatory drugs. Thanks

[@okayocharles]

Lucid presentation.

[@chihiro2181]

wow thank you!

[@tatianas.1449]

great video..but. what if the optical rotation of a given mixture is 0 degrees

[@sadiem6758]

That means they both rotate with the same magnitude just in the opposite direction. This would make it Racemate and not optically active.

[@ikram2326]

Thank you

[@anupamav1375]

good explanation sir :)

[@riadgani316]

omg because of you i got a B on a orgo exam thank you so much

[@AKLECTURES]

Riad Congratulations! :-D Keep up the good work!

[@existt]

thanks for the video!

[@AKLECTURES]

Tim van Zoeren You're welcome Tim

[@catherineassenga736]

+AK LECTURES (Andrey K) hellow lecture

[@markiequintana1467]

does the molecule have to be chiral to be optically active?

[@TheFidelRF]

+Markie Quintana achiral molecules dont have optical activity

[@mohanapriya1674]

thank you sir

[@bagdangachhinamorestopgram5871]

Sir why chiral molecules are active??.....plzzzzz

[@thranduiloropherion7756]

arghhhh this is too much XO this vid saves my life!

[@AKLECTURES]

Thranduil Oropherion lol awesome!! :-)

[@mr.melomaniacnextdoor6840]

+Thranduil Oropherion where is mithrandir? xD

[@thranduiloropherion7756]

maybe u should ask legolas :D

[@mr.melomaniacnextdoor6840]

legolas told ask thranduil :/

[@Stationerystudio47]

thanks

[@riteshtripathy5875]

How the molecule rotate light in atomic or subatomic level

[@soubhikdutta9642]

hey don't u find it hard to comment on so many replies !!! anyway s wonderful effort

[@MrJassirocker]

yo man!! im from india in 10th grade i love your videos. you should team up with khan academy.......!!!

[@AKLECTURES]

Thanks! 10th grade and watching organic chemistry lectures? You're on your way to becoming absolutely brilliant :)

[@MrJassirocker]

thanks man!!
dont give up ur doing good to people around the world...

[@Yankee4ever2]

bless you

[@aingo7158]

thanks a lot sir :)

[@Taylors_version133]

thankssss 24

[@Sara-wt4hh]

Thhhhhhhhhhhhhhhank you😍

[@VK-il9kv]

thx

[@gooddoctor6434]

Thankssssssssss❤❤❤❤❤❤❤❤❤

[@nermeenellayen9856]

👍

[@bekalutemesgen3126]

wow😊

[@imsunny3416]

Why cant my teacher teach like this

[@kklol07]

woah idk

[@samadismybitch]

Very helpful!!
BUT, I am struggling with one thing...
Per the molecules you have drawn:
(+) optical activity is associated with R absolute configuration, and (-) optical activity is associated with S absolute configuration; is this always the case?
How do optical activity and absolute configuration relate to one another ?

[@AKLECTURES]

No, that is not always true - in fact, it can be reversed for another pair of enantiomers. For other enantiomers, the R is (-) and the S is (+). There is no way of knowing whether the R rotates the light in the clockwise or counterclockwise direction without being told that information (or without obtaining it yourself from some experiment).

[@samadismybitch]

Thank you very much :]

[@AKLECTURES]

Any time :)

[@halidsufiyan3663]

Thank you

[@ImtiazAli-ku7dl]

thanks

[@lamiamia8282]

thank you