You literally made so much sense that I finally understand the MCAT question in regards to extractions. Just to clarify I would use a weak base to tackle one of the acids if I have 2 acids?

@SweeeetLovex3

3 жыл бұрын

Yes

Great explanations. Much better than the other Khan Academy teachers, no offense to the others, of course. You're all better than the many horrible professors college kids pay thousands for!

Clear explanation and clear writing!! Thank you so much!

Wow!! Very helpful!! Thank you so much

Thank you so much now I understand

extremely helpful!

thank you so much !!!

I'm incredibly impressed by how easy you write using a cursor, in cursive, no less! I expect you're using a tablet. Still, it's impressive! Nice video. Thanks.

@VoidHalo

7 жыл бұрын

Probably uses a pen on a tablet device like Sal.

Nice explanation thank you

Mild bases can't deprotonate weak acids but in this example (7:05) it can deprotonate acetic acid? Why?

@sennanna

6 жыл бұрын

Although both have resonance structures in their conjugate bases, O bears the negative charge on acetate ion whereas C bears the negative charge on phenolate anion. Since O is more EN atom than C, acetate ion is more stable. More stable conjugate base means stronger acid.

Omg thank u so much !! 😍😍

I never understood this in college, and all it took was one video on studying for the MCAT and now I feel like I'm a master! Thank you

In your 1st example, are you starting out with a known mixture of two compounds you must separate, or do you take each individually, then mix them, and then separate - in which case, that would make little sense, right?

Good explaination ........

super helpful :)

Thanks 💕

thank you . You just helped me ♡-♡

Lmao just imagine recovering 1 substance from the waste container 😂 I rather just redo the original extraction Good video tho

Too good

subscribed

ty even helping me a year later

So, basically, NH2 is neutral, and we want to make it polar so it goes to the aqueous phase. It can do this by stealing hydrogen and reacting with H-Cl. The phenol's OH was neutral, and we want to make it polar, too. To do this, it needs to get deprotonated so it can enter the aqueous phase.

Isn't aqueous phase at the top while organic phase at the bottom? Anything organic is denser than water. Particularly, DCM (dichloromethane) is organic solvent which is denser than water and obviously takes lower position in sep funnel.

@richiemd777

Жыл бұрын

Oil floats on water

Hi, there are two audios overlapping at around 01:05. I think you might have edited it. It's impossible to make out what you say in that like 2-3 second window

Why couldn’t phenol be in the Aqueous layer without being deprotonated? Isn’t it polar?

Why can't sodium acetate deprotonate phenol??

Bruh recovering from the waste container via extraction