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.
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.
I don't think you know how nice of a speaking voice you have compared to all other UA-camrs trying to teach (i.e. khan academy), honestly refreshing. thank youuu
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!!
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!
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.
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?
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.
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?
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?
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
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.
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.
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.
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.
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.
if you getting ready to take the MCAT, you should be watching this videos. I cant believe they are free. Awesome videos!
Thank you! I am glad you found them helpful!
I love this channel after 1 full day of watching these video my score went from 502 to 505
Excellent work!
This was so much better than the Khan Academy video thank you so much .
Hahaha thank you! It's all love here!
I don't think you know how nice of a speaking voice you have compared to all other UA-camrs trying to teach (i.e. khan academy), honestly refreshing. thank youuu
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!!
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!
Thank you! Please tell your peers about our channel :)
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!!
Beautiful video, even 8 years later; thank you so much
thank youuuuuuu. I have been watching all of these over the weekend, I am a big picture learner and these have been so helpful !!!
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.
I am very grateful for this channel! I wish I could give you a big hug! Thank you!
This was an outstanding tutorial. Great teaching presentation; clear, concise, and well-delivered.
Thank you!
Spent my week doing caustic washes at work, and I actually understand the chemistry of what's going on. Thanks!
This video is absolutely phenomenal
Thank you!
Your video is amazing. You have made me understand this better than my chemistry lab professor and any other youtube video has. Thank you
So well explained. I wish I saw the before all my OChem labs.
Thank you so much!
Awesome video..keep posting more videos sir..ur one video cleared all my doubts..thank u so much for time nd teaching
this makes SO MUCH SENSE! Thank you!
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?
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
^^ yup
beyond the scope of the MCAT but yes. I believe the main one to watch out for is DCM solvent
i kept getting extraction questions wrong on my FL and this just expanded my brain. thank you!!!
Thank you! Please tell your peers about our channel :)
You are a fantastic teacher! I'm not sure why your videos don't get more views!
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 ....
me too
Thank you! Please share this channel with your classmates :)
Great explanation!
Thank you!
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.
Amazing explanation, thank you so much 🤩🤩
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?
Does tempertature come into extraction techniques? ie.e freezing and or boiling!
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?
Im wondering why we took out the base before the weak acid
Explain about interfering and noninterfering radicals
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
Great video thank you
very nice and clear approach.
Thank you!
In the organic layer, how is it non-polar if there is a carboxylic acid?
What is the purpose of the non-reactive diethyl ether?
best video! thanks for your help.
You're welcome! Glad you enjoyed it :)
Thanks for your help
Good explanation thank you sir....
Thank you SO much, very clear!!
Glad to hear it! You're welcome!
Beautifully explained Sir, plz explain how further purification of the amino base aqueous phase to get pure
very helpful video and great explanation! thank you
I'm glad you found it helpful! Thanks!
Thank you!!!! Great explanation
You're welcome! :)
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.
so helpful! thank you!
You're welcome!
This is very helpful thank you so much!
You're very welcome!
Aren't carboxylic acids weak acids?
Stronger than alcohol in this context.
Compared to inorganic acid , it is a weak acid. But in organic it is a strong acid..
weak acid but strong than alcohols and phenols.
You honestly make studying for the MCAT alot easier, I wish I would have known about you the first time I took the test.
Organic solvents do not always rise to the top. There are a number of common solvents that are denser than water.
Nice explantion. Thank you very much sir..
You're welcome!
u help me a lot!! thanks
Thank you!!!
You're welcome!!!
Supper sir
Very clary explained, thank you!
You're welcome!
but a carboxylic acid is WEAK not strong
Carboxylic acid is a weak acid, but regardless good video
I love U
It's all love here :D
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.
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.
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.
@@dianesinghroy Thank you Diane :)
Liquid extraction is based on different solubility of material between two immiscible solvents