Extractions | Analytic Technique in Organic Chemistry

[@Preposter]

No other video goes over extractions better than this one. I've been searching for this all over the place. It's crazy how most chemistry oriented channels don't even cover this at all. Good job. This basically saved me.

[@ExplosiousKneesiusMaximus]

Man, if my professor made the effort to lecture the way that you do, the grade/confidence situation for the entire section would be drastically different. Don't ever stop publishing, you have no idea how helpful your content is.

[@imosdefinite]

I don't think you know how nice of a speaking voice you have compared to all other KZbinrs trying to teach (i.e. khan academy), honestly refreshing. thank youuu

[@dorothyotogbolu6485]

if you getting ready to take the MCAT, you should be watching this videos. I cant believe they are free. Awesome videos!

[@PremedHQ]

Thank you! I am glad you found them helpful!

[@SJ-qf2tz]

This was so much better than the Khan Academy video thank you so much .

[@PremedHQ]

Hahaha thank you! It's all love here!

[@vikcheban923]

You truly have the gift of teaching. Explained so well that I didn't feel like I had to memorize anything. I actually understand the procedure and expected what you were going to say before you said it. Same with other vids. GBU!

[@PremedHQ]

Thank you! Please tell your peers about our channel :)

[@yansirreaviles5036]

I am 9 days out from my MCAT and had not been able to understand this concept. Today, I finally did. Thank you so much for this video!!

[@dragonflyjones4611]

I love this channel after 1 full day of watching these video my score went from 502 to 505

[@PremedHQ]

Excellent work!

[@elainetorrese7641]

WOW!! Phenomenal presentation!! I was pulling my hair out trying to figure this out and you summed it up like it was nothing!! Kudos to you & thank you!!

[@34656enjhuuo]

I'm still really early in chemistry and don't even know the absolute basics but I think I still learned from this because the explanations in this video are laid out so simply.

[@kingpin1118]

Spent my week doing caustic washes at work, and I actually understand the chemistry of what's going on. Thanks!

[@leledeedmon9484]

Beautiful video, even 8 years later; thank you so much

[@zulucharlie5244]

This was an outstanding tutorial. Great teaching presentation; clear, concise, and well-delivered.

[@PremedHQ]

Thank you!

[@audreycruel4333]

i kept getting extraction questions wrong on my FL and this just expanded my brain. thank you!!!

[@PremedHQ]

Thank you! Please tell your peers about our channel :)

[@AquaticLogic]

So well explained. I wish I saw the before all my OChem labs.

[@PremedHQ]

Thank you so much!

[@chemist7908]

This video is absolutely phenomenal

[@PremedHQ]

Thank you!

[@chenoavega8185]

Your video is amazing. You have made me understand this better than my chemistry lab professor and any other youtube video has. Thank you

[@hemaa6286]

Awesome video..keep posting more videos sir..ur one video cleared all my doubts..thank u so much for time nd teaching

[@tunneltrance]

be careful, the organic layer can sink to the bottom if its denser then water. So it's not really a rule of thumb that Organic = On top

[@jacquelinezanders683]

^^ yup

[@Jake-tz6ye]

beyond the scope of the MCAT but yes. I believe the main one to watch out for is DCM solvent

[@mooshedpotato]

thank youuuuuuu. I have been watching all of these over the weekend, I am a big picture learner and these have been so helpful !!!

[@amandaduggan8676]

You are a fantastic teacher! I'm not sure why your videos don't get more views!

[@mercyk6064]

Amanda Williamson I am so stressed out that he is in medical school and has a brain tumor 😞😞... his videos are keeping me from going insane ....

[@dorothyotogbolu6485]

me too

[@PremedHQ]

Thank you! Please share this channel with your classmates :)

[@ashlimartin1611]

I am very grateful for this channel! I wish I could give you a big hug! Thank you!

[@npm1811]

While it’s true that most organic solvents are less dense than water and will sit on top, it is always worthwhile checking the density of your solvent beforehand, for example, DCM and chloroform (which are extremely common solvents) are more dense than water so will sink to the bottom.

[@sarahransomm]

this makes SO MUCH SENSE! Thank you!

[@VndNvwYvvSvv]

When separating, how do you avoid leaving some aqueous behind or catching some organic? Stop just before the boundary, catch and discard boundary in a new flask, then run the next step?

[@allaalbonijim2748]

Thank you SO much, very clear!!

[@PremedHQ]

Glad to hear it! You're welcome!

[@nnekaude]

Great explanation!

[@PremedHQ]

Thank you!

[@jocelynjchan]

This Ochem playlist is super helpful! Just wondering, in the example where the strong acid in the organic mixture, is reacted with the weak base (NaHCO3) extraction agent - why do we choose to react it with the weak base agent as opposed to the strong base agent?

[@thechiralkid6349]

Ordinary alcohols do not act as acids or as bases in water. A phenol would work as your weak acid but not an ordinary water-insoluble alcohol.

[@syedibadullah1661]

very nice and clear approach.

[@PremedHQ]

Thank you!

[@SnorlaxNaps]

This is very helpful thank you so much!

[@PremedHQ]

You're very welcome!

[@vijaybaldawarealvastu]

Sir, as u said strong acid is used to seperate amine, but instead after adding aquos NAHCO3& removing it from solution can we add NAOH solution to remove weak acid, keeping the amine with solvent & then distilling it from the solvent. Bcoz my organic mixture is nicotine, Petro ether, one weak acid & one strong acid. I want nicotine to seperated. Plz reply & oblige. Actually highly impressed by ur explaination. Plz answer sir

[@USHANLAKMALPunchihewa]

Nice explantion. Thank you very much sir..

[@PremedHQ]

You're welcome!

[@mahsaomrani9365]

very helpful video and great explanation! thank you

[@PremedHQ]

I'm glad you found it helpful! Thanks!

[@adrianvirgo1988]

Thank you!!!! Great explanation

[@PremedHQ]

You're welcome! :)

[@vijaybaldawarealvastu]

Beautifully explained Sir, plz explain how further purification of the amino base aqueous phase to get pure

[@kudosdc]

Organic solvents do not always rise to the top. There are a number of common solvents that are denser than water.

[@ForPropertyInvestors]

Does tempertature come into extraction techniques? ie.e freezing and or boiling!

[@atikna52]

What I don't understand is that an amide is polar regardless of it's charge, right? So why would it be found in the organic phase if it doesn't have a charge?

[@alexsmith2840]

You honestly make studying for the MCAT alot easier, I wish I would have known about you the first time I took the test.

[@tamarkikvidze-k4m]

Amazing explanation, thank you so much 🤩🤩

[@kal7708]

best video! thanks for your help.

[@PremedHQ]

You're welcome! Glad you enjoyed it :)

[@harveenkaur4684]

so helpful! thank you!

[@PremedHQ]

You're welcome!

[@sasayed9936]

What is the purpose of the non-reactive diethyl ether?

[@thecorndawgg]

In the organic layer, how is it non-polar if there is a carboxylic acid?

[@gangakani8907]

Explain about interfering and noninterfering radicals

[@harigjoka4094]

Thanks for your help

[@rinasyafinazrazali2134]

u help me a lot!! thanks

[@friedchicken892]

Im wondering why we took out the base before the weak acid

[@mercyk6064]

Thank you!!!

[@PremedHQ]

You're welcome!!!

[@zachvrobel2478]

Great video thank you

[@jakkaashok667]

Good explanation thank you sir....

[@gaurav889]

Aren't carboxylic acids weak acids?

[@srin6718]

Stronger than alcohol in this context.

[@USHANLAKMALPunchihewa]

Compared to inorganic acid , it is a weak acid. But in organic it is a strong acid..

[@syedibadullah1661]

weak acid but strong than alcohols and phenols.

[@李湛元]

Very clary explained, thank you!

[@PremedHQ]

You're welcome!

[@gangakani8907]

Supper sir

[@nehap2751]

but a carboxylic acid is WEAK not strong

[@dragonflyjones4611]

I love U

[@PremedHQ]

It's all love here :D

[@triple_gem_shining]

Carboxylic acid is a weak acid, but regardless good video

[@blinkybit]

Wrong. 'organic' layers do not always rise to the top. Also, using 'oil' as an analogy is also dumb. Many organic solvents have nothing to do with oils.

[@elmosgay]

Cant even watch the whole video. Too many wrong statements. Extraction is not based on acidity and basicity. Extraction is based on polarity. ( However, an ACID BASE EXTRACTION, is based on both the polarities, as well as the acid base properties of the analytes) Organic layer doesn't always rise to the top! The position of the layers are based on densities. I.e. Methylene Chloride (organic layer) is more dense than water, so it will be below the aqueous layer usually(unless aqueous is heavily saturated with dense compounds like bromine). Please fix this, and idk about the rest of the video, i can't watch, i'm already cringing.

[@dianesinghroy]

Kevin Muthima agreed, however he is teaching "quick and dirty tricks" to get you through the MCATs efficiently. They want to see you understand trends and concepts. Don't hyper focus get too lost in the details. I'm a biochemist and worked in a lab for many years before writing the MCATs and found the biochem questions the most frustrating to do because I was coming with way more knowledge then the MCATs expected me to have. It would bother me that they used the wrong technique to measure something, or even outdated lab lingo. What I found helped was to step back, keep the big picture in mind, and ask myself what concept or trend are they testing. Knowing all the little nuances and details may only give one extra point here and there. But getting lost in the details and wasting time could cost you a whole passage. Recognizing when to apply these quick tricks (which is 90% of the time) to get the right answer and quickly moving on to the next question, is what's key.

[@PremedHQ]

@@dianesinghroy Thank you Diane :)

[@raymartin3346]

Liquid extraction is based on different solubility of material between two immiscible solvents