Optical activity | Stereochemistry | Organic chemistry | Khan Academy
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- เผยแพร่เมื่อ 5 ต.ค. 2024
- How optically active compounds rotate plane polarized light.
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Organic Chemistry on Khan Academy: Carbon can form covalent bonds with itself and other elements to create a mind-boggling array of structures. In organic chemistry, we will learn about the reactions chemists use to synthesize crazy carbon based structures, as well as the analytical methods to characterize them. We will also think about how those reactions are occurring on a molecular level with reaction mechanisms. Simply put, organic chemistry is like building with molecular Legos. Let's make some beautiful organic molecules!
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Chiral = optically active
Achiral = optically inactive
Except in meso compounds where you can have chiral centers but then the molecule is achiral, therefore optically inactive
u rock
Straight forward
Thanks
On graduation day, I'm going to thank God, then Khan Academy for helping me survive Orgo.
did you graduate?
I will thank Khan Academy first :)
We need to know. Did you graduate
ruhakana I graduated and am no longer using my bachelor degree 🙃
S. R. I did
Unbelievable how you turned the topic to so easily understandable!! Thank you so much
Thank you very much! Finally I know how plane polarized light works! My teacher kept talking about angling wavelengths but he never showed me an apparatus diagram to relate this to.
I say wow 😮...wow huge respect...u nailed it......I understood very nicely
I have a pretest today, and thanks to this amazing video, with amazing explanation from the amazing Khan Academy! 😆😆😆
worst concept best exemplified
YOU ARE A LIFE SAVER BROO.. CANT THANK YOU ENOUGH
what u want is at 8:50
God I wish I had seen this before I watched the whole thing fml
Most people like me need every single piece of information in this video 😂😂
You dont understand how much I need this
U r amazing. I understand finally this concept .
To understand why this works, look for the TH-cam on optical rotation by Steve Mould. You will thank me.
Thank you ,
Thank you very much. That was Incredibly Insane and Fantastic.
Would you please suggest more TH-cam channel like that
you guys are amazing! thank you soooo much!! this video saved me.
what if the optical rotation of a given mixture is 0 degrees? does it not possess a chiral center then?
it could be 50% dextro 50% levo then the rotatory power cancels out and the optical rotation = 0
OMFG THANK YOU
how do we know if plane is rotated clockwise or anticlockwise
ahamed akmal last thing he said in video, it is determined experimentally, so nothing can you say by looking at the structure and nothing can you do in your mind to make get this experimental data other than do it in physical world in the lab.
@@sirojajam55 BRO HE ASKED 2 YEAR AGO
I have a question why can not compounds that do not have optical isomers rotate a plane of polarized light ? You mention that the plane of polarized light will be rotated because of hitting molecules why doesn't it happen with the other compounds ?
Thank you in advance
amazinnnng ...thx
Easy and clear, thanks from Italy
sei il benvenuto dalla Palestina!!!!!
Helped alot in understanding optical isomerism. Thx!
OMG. IS THIS WHAT MY PROFESSOR SPENT 20 MIN TELLING I COULD NOT GET IT. THANK YOU
Thanks a lot
I have one question..which compounds are optically active?
Chiral molecules
THANK YOU FOR ASKING THIS QUESTION. I knew there was a way to know optical activity based on chemical structure. Bless you good sir!
What are molecules?
experimental
@@utopianslay Hey even though the molecule has chiral centers,it can be optically inactive because it may have any elements of symmetry
Wow...cool!
Thanks!
Hi there,
Shall I ask question, what is the specific rotation of glucose in 403nm please?
345367353
Roughly +150
Please upload videos for advance organic chemistry
well explained! thank you
thank you
Awesome video, thanks prof :D
This is actually really cool
Perfect..!! Thank you
This is helpful
Great explanation 👏😍 thanks 🌹
love you from i have exam tomorrow xD
You haven't mention if enantiomer is there. and talked about the enantiomeric excess
but why is R-caraway levorotatory ?because I understand R compounds move in clockwise direction .
Sir which are the optically active compounds??? Can you please give some examples?????
As always, a perfect explanation
thanks man
In the tube is there only one enantiomer at a time ?
solvent effects!!
Wow, do you use Organic Chemistry Book by Klein? Thanks for explaining it :)_
Can u plz help me to diffrensiate btween d/l and R/S nomeclature
my reference is mcmurry's book foundations of organic chemistry, this polarimeter was mentioned but it was Jean Baptiste-Biot's work and not pasteur's? please enlighten us. thank you.
Angelica Martino optical activity was discovered by biot. But Pasture who could discover dextro laevo and racemic mixtures for tartaric acid and even could separate the isomers.
I'm a foreign student and i have a question forexample, if there's a compound (+)-binaphthol, how do i pronounce (+)? Plus? Or positive? Is plus a wrong way to call it?
김다미 You can pronouce it as d-binaphthol (i.e.dextro binaphthol) & if it is with a negative sign then it is denoted with "I"sign, written as I-binaphthol ( for laevo binaphthol)
In other words, d is for dextro(+) & I is for laevo(-)
thanks
How do we know the plane is rotated clockwise or anticlockwise
great explanation 🙏🙏
Why nobody taught me this in school!!
Ily
in which grade do you guys study this, i m in eleventh grade and they taught me this and much more
i’m learning this my junior year of college lol
And I'm learning in 12th grade
✨🖇️
upload more
you sound like the youtuber social response xD
wow epiphany
Bless you and this channel :')
Ahmad Rivaldi A1C119047 kelas reg B hadir
wtf
Ples no English only hindi
You write very nice