Optical Activity - Specific Rotation & Enantiomeric Excess - Stereochemistry Youtube

This organic chemistry video tutorial explains how to calculate the specific rotation of an enantiomer given the observed rotation, the pathlength, and the concentration of the solution. It discusses how to determine if a molecule will show optical activity based on its chirality. It also provides the formulas needed to calculate the optical purity and enantiomeric excess. Those formulas can be used to calculate the relative percentages of the R and S isomers.
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22:47 22:47 😊

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Take notes in class it is the same thing.

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LoL same 😂😂

[@annamaelucero3518]

Thank you for this great video lesson 😭😭😭✊

[@normielite]

Some text book says:
: R - configuration rotates in a dextrorotatory way
: and other say R - configuration rotates light in a levorotatory manner
Help clarify this for me
Thnx🤗

[@user-ol6nn1jx4b]

That's why he said the r configuration is not always associated with the (+) it can be either left or right same thing as the s configuration

[@user-ol6nn1jx4b]

Depends on the specific molecule u are dealing with

[@norman1291]

What does "rotate light" mean, from a practical perspective? What does it look like?

[@infinitegaming44]

Great question

[@norman1291]

@@infinitegaming44 I am beginning to suspect that they do not even know, and just repeat what they have been told.

[@hometube8205]

Thank you Teacher
We don't have word to express our ❤

[@DrTuph]

For question 2 (at the end of the video) I got alpha = -1.386*10^6º.

[@jyothinath9820]

I got 138.6 * 10^7

[@mohammadarafat3763]

How does rotation occurs in optical isomerism or optical reactivity?

[@VaqifEzimov-xg4oj]

Thanks

[@harrypotter4051]

How to you rotate light? ?
Tooo much confusion with this topic.

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Thanks for all grade levels

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sweart

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sweart

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[@ethiolove3664]

Great explanation!! Thank You!

[@FridahKananu-yj5of]

Thank you so much sir

[@oladimejioye6313]

Please do a video on symmetry operations 🙏🏽

[@oladimejioye6313]

@Ryder Chandler I was talking about symmetry operations on molecules in chemistry

[@emircankocatepe9412]

can we say that mesos are also identical compunds?

[@lalisa639]

Yes

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Simply awesome...

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[@danos1011]

Hello, I'm a member, can you please help me? Do truxinate dimers which have a cyclobutane ring and either 2, 3 or 4 substituents on the same face have enantiomers? Sorry, just something I need to prepare and can't find the answer for!

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Love you Sir❣️

[@innocentabae1118]

This guy has been the Best, but now he's giving video whose content is not complete... Kindly post the whole videos here...

[@cameronmueller]

He has to make a living too, he has provided numerous examples for free; best organic videos on RUclips.

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Good....thank you

[@cameronmueller]

Thank you

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Love you 💝
Bless you...

[@ZemeneEndalew]

Continue

[@bethelehemwoldetsadik8116]

when we rotate the trans-1,2-cyclohexanediol, does that make the molecule achiral?

[@mohammedumarsiddiqui1944]

Woudld be awsome if you could have the transcript written out

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Men and Half

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💓

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[@reenanwa]

so how do we know if it's (+) or (-)?

[@taiwo2729]

Based on the rotation

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Lost

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First

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Good, but the way pronouns is not good for Ethiopians because we can not speak english as natives as generally ,thank you very much!!!

[@hey3849]

Thanks