Separating Components of a Mixture by Extraction

[@louiselapensee7706]

Outstanding video and explanation! I did a PhD in organic chemistry many years ago and I'm now in my 9th year of secondary teaching, planning an A-level lesson - Wow do I wish your videos were around when I was at Uni!

[@lienloo1274]

Hello Dr Louise, is this a possible method to extract organochlorine concentration, Im doing a research for my thesis, and its about occurence of OCPs level of concentration in a river.

[@siguy442]

@@lienloo1274 how did your thesis go

[@alicialouv2218]

I'm a visual learner, and these videos are SOOOOOOO helpful! Now I'm not as nervous about messing up in lab!

[@user-pf4cj7kb5e]

Concepts like "visual learners" And learning styles in general are unsubstantiated by scientific evidence

[@adam3896]

@@user-pf4cj7kb5ewas about to comment that

[@SteveBufz]

@@user-pf4cj7kb5e yes but things like adhd matter, it just makes things more interesting for you to learn thats all that matters for now

[@oey11]

​@@user-pf4cj7kb5e If you were being consistent with running 4 miles everyday, would you instantly change the routine if a meta analysis told you theres a completely new way of running. Sometimes you have to ignore the "most optimal way" of doing things because it just doesnt work for you. Youre acting like you suddenly become unable to memorize and understand once you do it visually lol. The difference is microscopic.

[@brady5829]

It baffles me how you're able to put out this incredibly high-quality content so consistently and most channels/networks can't advance past a black screen and 20min of "uhh so umm"

[@somav8]

A

[@hamzaha.al-quaid2441]

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[@marcmat9294]

@@hamzaha.al-quaid2441 Right 😂😂 Organic chem tutor literally got me through most of college

[@jameslockwood7679]

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[@Meowmeow11721]

Whadda ya talkin Abeet?

[@rozlanbasha2485]

This is really helping me out with the lab report I forgot I had, thank you!

[@davidbogossian2583]

Another absolute banger by Professor Dave. My 10 page pre-lab outline couldn't explain it worse. Bless

[@chris2656]

you are actually amazing man. Like any time I find myself in a pinch and I've lost all hope one of your vids will just pop up out nowhere and save my butt

[@ZezimaTruth]

This is exactly what we do at my job to analyze water samples for oil and gas. I work for my state's environmental quality department so this is very relevant.

[@alahamomand33]

This deserves a lot more attention and likes, it was beyond thorough !!!! Loved it !

[@larrykent196]

Professor Dave another great video, direct and to the point. Keep up the great work. Cheers!

[@emteemte3985]

I am crazy of you profesor uffff I have never seen any profesor who did chemistry easy and impressive. I understand as soon as I start your video .please do not die as a living thing. You are important to us

[@reyesrosariodaniel5750]

Incredible video!!!! I'm from Mexico and I didn't find a good video about this topic in Spanish, therefore I had to search a video on English and your video it's perfect

[@goranjohnson4093]

WOW! your video is saving me on this report i procrastinated. You are truly the michael jordan of organic chemistry.

[@Reyes6523]

Such a good lecturer. Thanks for helping me increase my MCAT score

[@eddievo663]

You are one of the best professors I know until now. If I have any questions regarding the chemical field because I am pursuing as a chemical engineering technologist in the 2nd year, how can I reach you ?. Thank you a lots for your effort Profs Dave.

[@Eddance911]

Did an extraction for the first time last week - wish I had the video before then. It's perfect!

[@corydemeray7594]

an actually useful tuber, one that teaches and also entertains...90% of tubers tend to just to the latter... also glad to see somany people jumping into such a deep can of spaghetti. another cool dave!!..i dont know of any bad daves!

[@tangocash84]

super helpful rn that im doing an organic chemistry lab online during this pandemic. Thanks for the upload!

[@gravitonium9672]

You are doing a service to humanity.

[@danieldelagarza7559]

Who are you and what did you do with Dave? 🤣🤣 nice new haircut professor!

[@oshadeenavoda9728]

Lol😂😂

[@nikitagholizadeh1380]

And I'm finally starting to understand what extraction really is😂😂 you know bcz of this whole quarantine thing we can't do these experiments in lab so your videos are a life savor!!Thank you so much!!

[@manojsapkale2624]

I am searching Indian in comment box and I found you😂😂

[@mackeylin9387]

If only I had seen your video sooner! I made so many mistakes during that lab because the paragraph-style instructions were not very helpful🥲 I had no idea how to vent when the text asked me to or why we were adding all the chemicals and solvents for. Thank you for teaching me! It helps me regain hope and my passion for chemistry!

[@bmozafari7]

Yet another excellent video to help with my orgo lab. Thanks prof Dave!

[@fatimaalbeik9402]

So happy to discover this channel. Thanks!

[@KAR_musica]

Imagine having a lecture with Dave and actually leaving class understanding the material

[@gamexpose6301]

What a bloody legend, absolute gold.

[@dominoot2652]

these are so much better than my lab manual's procedures, ngl

[@Nany-q6l]

Tank u for this videos. You are amazing. Industrial chemistry student from Saudi Arbia❤❤

[@Ten80pete]

Damn professor Dave... idk how you did it, but you took my absolute most difficult (but favorite) subject of organic chemistry and helped me make sense of it. Those acid/base reactions sure come in handy.

[@premedmelody]

I wish i could like this 10 times omg thank u professor dave!

[@magnusdamborg6568]

Thank you Science Jesus

[@DodongoManoof]

Got lab practical Thursday.... which lab will I get??? It's drawn from a hat!!!! Maybe this one! 😄😄

[@inessvalina8985]

thank you so much! extraction finally began to make some actual sense 👏

[@rickyortiz77]

You are amazing explaining each and every detail! I will definitely recommend you.

[@kathrynschram4950]

these videos are so helpful, I'm doing my degree at uni and still use these for my chem practicals if I can

[@anabelle9932]

Thanks for the video! How did you know how much of each (ex: HCl, sodium bicarb, etc.) to add while performing the extractions?

[@benmyers4279]

Hi Dave, thanks for a great video as always! I just have 2 quick questions. 1. What happens to the anion in the strong acid, chlorine in this case? 2. What is the gas that is produced by the reduction of the alanine? My guess is that both questions can be answered in the same way: the anion is ditched by the proton and forms a gas. Is this correct? If so, should there be a warning to not try this at home due to the dangers of chlorine gas?

[@kudosdc]

It’s a chloride ion and it goes nowhere. It is dissolved in the water along with aniline ion. There is no gas product in this reaction. The pressure build up comes from the volatility of the ether.

[@Preposter]

I'm so pissed. My professor made this sound way more complicated. Thanks Dave.

[@freight_train13]

I'm 10 years out of college and wanted to watch something like this on a whim (dare I say, for fun?). Excellent explanation!

[@pokemonjynx1019]

prof. dave strikes again!

[@parinazmika]

you are the greatest person ever for explaining chemistry❤️❤️❤️❤️

[@lillian5353]

This video. This is everything.

[@behroozmorteza]

well explained and was so useful ... appreciate your efforts and thanks alot

[@sia_sunny]

That's so cool and clear. Thank you so much from Russia.

[@shingwei97]

always check the density! solvent like DCM will be at the bottom.

[@ProfessorDaveExplains]

yes good point! though most organic solvents will be on top

[@DaniFilth87]

In an OC lab course the lab assistant provided a good life hack: if you're unsure which layer is which, just draw a line with a marker where both layers meet. Add a little water: if the level of the seperating line remains in line with your marking, then water is the upper layer. If it is raised, water is at the bottom

[@gautalawrencebusa7474]

@@DaniFilth87 Awesome hack!

[@spartanrabbit]

Is this grindr that we talkin bout tops and bottoms? Power bottom BTW :)

[@MatanuskaHIGH]

spartanrabbit Dennis reynolds?

[@messimagisterial4216]

OMG thanks so much this video was incredibly helpful it pretty much cleared what was happening in the lab. WOW

[@sri-jh2xl]

Which grade do you learn these seperation methods of compounds?

[@blinkybit]

PD is so cute and cuddly in these vids. But he gets a bit less cuddly in those take-down vids he has done. And rightly so. Just funny to see the duality of man in one of favorite legends of chem. teaching.

[@Hiiiiitsdevie]

In 3:14 won’t the choloroanaline and benzoic acid react since they are both acid and base?

[@aritrakonar9203]

Nope. Organic bases and acids don't react spontaneously. They have a higher energy barrier and always require catalysts to react with each other.

[@alahamomand33]

Your voice is soooo soothing

[@MegaAmanDude]

Single-handedly destroyed my chem teacher in explaining this. Thank you!

[@brooke6311]

Thank you so much. Great video very easy to understand.

[@lupitamex13]

Omg this brings back bad memories. I remember in OG Chem I poured out all the liquid by accident🙃. I still remember my partner begin really upset even tho i ask them to where and they said all of it and by all of it they meant the aqueous layer. Hahah fun times 😅

[@mamushgebramariam8892]

prof thank you for your deep explanation. but which is our product in separation of benzoate with HCL?

[@olivernyaga5435]

Literally you make my learning to become easier ,,,,,I appreciate you alot

[@azaaa2821]

THANK YOU SO MUCH PROFESSOR DAVE

[@juleschannel3934]

Thank you so much! Really helped me to improve my understanding.

[@Akaeru]

Hi Professor Dave. Just a question because I need it for a research project. What equipment do you exactly need for soxhlet extraction? I'd be extracting flavonoids from cabbages. I already have ethanol but what else?

[@OZTutoh]

I came here to learn about Solvent Extraction when it comes to extracting lithium from black mass, a product of battery recycling.

[@buffy377]

I am here learning as an aromatherapy student lol, thanks so much!

[@santicruz4012]

How do you decide which acid or base compound will work better for the extraction? Is it pH based or is it experimental

[@kudosdc]

Strong acid and strong base unless there is a reason not to. His choice to use NaHCO3 as the base was confusing to me. Carbonates are generally a poor choice for acid base extractions due to the generation of CO2 gas, which results in foaming, emulsions and rapid pressure buildup in sep funnels.

[@cannonsimnitt4742]

What about containment? Would it be a precise extract? Or would it have another impurities

[@palakbhil2549]

Thank you so much professor for making this video 😇😄

[@Mariiiam]

Professor Dave for the save, as always ❤

[@mrpeanutbutter6094]

Dave and save Rythm

[@gulyberdt5513]

It sounds like you know what you are doing. I took a zip of some NyQuil, after some minutes I felt like a brick was put on my chest and I started to feel so dam sleepy, but I stayed awake watching Netflix. After a couple of minutes of fighting my sleep I felt like the brick was removed and I no longer felt sleepy and I am here 4:20Am writing this to ask you If there's a way to extract the chemical? In NyQuil that makes us fall to sleep. Great video By the way, berry well explained and detailed... I Wish you would be the one person directing every single video on KZbin. This is my 2nd language for you strangers don't correct me, I didn't listen to my English teacher when i was in school and I'm not listening to you now. But Science I do like so, if you can help me out with this, go ahead and reply.

[@waltersobchak7275]

The substance that makes you sleep is diphenhydramine also active ingredient in Benadryl. No need to extract from NyQuil just buy generic sleep aid pills. Same substance

[@liorsinger1]

That was awesome! Thank you! please publish more of these videos!

[@s.g.n.msirisena4261]

Actually nice video.... That method was difficult to me,but after watching this video i could understand...thanks for you..

[@chloes1308]

I literally love you, thank you so much 😭

[@optimusprime3688]

Hey Professor Dave; are videos 63-119 all lab videos or are some lecture videos?

[@clumsycat4]

This video is super helpful! Thank you so much!!

[@lithopseffectt]

I did this in my lab but I was wondering what the purpose is of cooling the aniline salt before adding the NaOH?

[@michaelmaida6204]

At 7:58, how do we get rid of the Na? Does it just remain in the dried solution? Is it filtered?

[@rodrigocristopherpelucchiv2970]

Top notch content. Congratulations.!

[@biologyhub94439]

Nice explanation

[@LolLol-ic7kh]

Question: Which is more effective in separating the components of an ink? Water or alcohol?

[@razasyed575]

finally somebody is speaking my languange

[@lindaedvardsson4218]

Ooh.. like Cold Water extraction.. like to separate codeine from citodon.. which led me knowing that I cant metabolize it (not always anyway, there is times tho..) and its useless for me🥴... Please Prof. Dave.. Can You explain that process and whats happening?!...😌.. Maybe You has a vid about it already.. but I tend to get stuck when checking Your lists... so I mostly learn something else in a truelly neat way❣️(stunned, shocked and so on). Thanks❣️👋🏼😌🇸🇪 (red. ang ”cold”)

[@collinsedafe415]

Hello my dear

[@lindaedvardsson4218]

@@collinsedafe415 Hi there..👋🏼🙂

[@collinsedafe415]

@@lindaedvardsson4218 how are you doing my dear I hope you are doing well my dear

[@lindaedvardsson4218]

@@collinsedafe415 hmm😧.. Thanks.. Its tough but Im still battle… How are You?… and Who are You?🥴👋🏼🙂🇸🇪

[@watching4410]

Use physical properties to separate. Solubility Polarity/dipole moment Water polar Ether non-polar To get NaCl and cholesterol lipid respectively. . Complex: 3 compounds (acid/base/neutral) Add water aqueous + ether organic (cmpnds don't separate, but ether/water do) 1. 4-cholorAnilane base Add HCL and water multiple washes to get Anilane salt 2. benzoic acid Add base NaHCO3 to get aqueous water layer from ether. And benzoate ion 3. What's left is ether and neutral 1,4dibromobenzene add drying agent NaSO4 . To get solid back: Cook ether volatile cooking. Anilane salt + NaOH cold water bath 4-choloroanilane precipitate. Vacume filter the crystals. . Benzoate ion+ HCL... benzoic avid crystals form PH 2 at completion. Vacuum filter for crystals.

[@alaakhatib4295]

super helpful. Thanks for the upload!

[@muhammadumarsarfraz4705]

I think soo that sodium chloride and cholesterol can be separated by filteration because cholesterol doesn't mix in water so it settles down while NaCl mix in water. Am i right professor??

[@abdullkarimtarda8857]

Thanks a lot . You make the picture more obvious

[@airicsnider7572]

I swear to god whenever I graduate and start making money I'll donate to your patreon lol.

[@nathanieliglesias7377]

Oil separates on its own by time just to make sure its pure 👌

[@Textbook000]

Literally the cutest video ever

[@omegabased]

Dave you are the best

[@amanal-kabbani2745]

Thank you for such a great explanation!

[@adtatatumtemporis7111]

Thanks Mr Heisenberg

[@ezpzwins7613]

Have a test tomorrow on solvent extraxtion and chromatography

[@palden_]

Hi, I have a question about extraction, if you could help. How would we go about seperatign alcohol and carboxylic acid. More specifically, I am talking about napthol and terphthalic acid. I just don't understand this becuase every video I watch always seperates one acidic, one basic, and one neutral compound.

[@shafaqnoor5906]

You're new haircut 👌 And teaching method... 👌

[@ShwetaNaikar]

Nice explanation. Thanks a lot for this

[@travisphelps3602]

Could you do a video of acid base extraction of kratom leaf 🌿 I can't find any good info on a method using d limonene apparently as the solvent 🤔 it's all so mysterious because I guess you have to use multiple types of solvents idk

[@gabrielbashun8526]

very informative, thank you!

[@Sarafitnss]

this helped me so much thank you!

[@zamanmakan2729]

David, why are we adding Ether in the first place? For instance, if there were only an acidic and a basic, couldn't we directly use our HCL and Nabicarbonate(for base) without adding ether beforehand? Thank you so much

[@ProfessorDaveExplains]

ether is just the solvent used to form a liquid solution, the solutes are all solids

[@danieldelagarza7559]

And thanks for another awesome video!

[@sofiacastellana5673]

i literally love you

[@Pauline-hr9dh]

wouldn't the carboxy-group in benzoic acid also interact with the water molecules when aniline is washed out of the solution? thank you for your videos!

[@hikari_700]

Ah so this is what I was trying to understand and cry my eyes out for ,thanks. My teacher could never...

[@evelyntromp789]

You are a life saver! Thank you!!

[@sonogashira3376]

hello, i have a question, is benzoic acid a bit water soluble?

[@pluradox]

I have an extraction lab tomorrow and I'm very confused time to learn