Sal, your Organic Chemistry teaching ability is second to none. You don't teach/talk too fast, repeat key information for clarity, and simple explanations. Thanks a million.
The very first time I watched an organic chemistry video without getting depressed..Really Helped me I was so worried because I couldn't understand a single word my teacher explained..!
Pretty good explanation, should also include stereochemistry, contrasting SN2 reaction which results in inversion of configuration, whereas SN1 proceeds with retention of configuration, would need to start with an optically active alkyl bromide
when you are in college and have 2 hours to study for your exam...... videos go onto a 3.0 speed at the minimum Thank you for the video though! very helpful!
I thought the same thing but I think since it's an aqueous solution and HBr is a strong acid, the HBr would pretty much immediately dissociate upon formation leaving behind the H3O+ and Br-.
Why would the partially negative O in the H2O attack the partially negative H that was part of the original nucleophile? Wouldn't those two molecules repel?
That's kind of his thing. I still wait for a day when someone will edit these videos and cut out all those repetitions, but until then, all we can do is use to it :q
i'm sorry but i don't get why you added the second water molecule ? what was the reason ? does it mean that there are two nueclophiles in the reaction ?
Because otherwise that water molecule would be too shy to attack the carbon when the bromine is around ;J Neutral oxygen is not a very good nucleophile, because oxygen is very electronegative and it would rather keep those lone pairs to itself than share it with some other atom. Therefore it has to wait until the bromide wouldn't be there anymore and leave a strong positive charge behind, on that carbon. Then this positive charge is strong enough to attract even as weak nucleophile as that oxygen and bond with it.
This is basically what "acidic" means: protonated water. Acids are willing to lose their hydrogens (protons), and they do that by protonating water and producing those hydronium ions in it. The more hydronium ions, the more "acidic" is the acid. The amount of those hydronium ions is basically (or acidically :J ) what the pH scale measures.
@@SamskrutiMurthy True, but wedges and dashes are a notation that is being used specifically to show 3D structures (those that cannot be drawn on a plane with ordinary lines). Because of that, using them for trigonal planar structures is misleading, because it makes people think about tetrahedral geometry instead.
You can also regard it as a dipole moment. The electrons are spread unequally between the two nuclei, favoring the oxygen due to it's higher electronegativity. All the charges distributed carry as a group a whole charge number, but there are some areas where fractional charges reside.
Andrei Bubeneck Okay. Let me see if I got it. The probability wave of the electron has a denser portion. This means that part of the molecule is a concentration of electric charge that is not centered on the nucleus. This makes it asymmetric with respect to the electric field, just as a compass needle is asymmetric with respect to the magnetic field. Close?
Because oxygen doesn’t have enough electrons to be happy, it’ll become a positively charged ion. H3O+ for instance. The same for negatively charged oxygen, though instead of having to little electrons it has too many, OH- (Too many electrons to be a neutral atom)
Sal, your Organic Chemistry teaching ability is second to none. You don't teach/talk too fast, repeat key information for clarity, and simple explanations. Thanks a million.
I love you Sal , for three years I have been learning from you in the best possible way ... you are the best teacher ever ... thanks a lot
The very first time I watched an organic chemistry video without getting depressed..Really Helped me I was so worried because I couldn't understand a single word my teacher explained..!
Pretty good explanation, should also include stereochemistry, contrasting SN2 reaction which results in inversion of configuration, whereas SN1 proceeds with retention of configuration, would need to start with an optically active alkyl bromide
Bromos before H2Os!
Also good explanations.
Seriously This Is Fabulous.. Every video from Sal is Understandable.Respect to this Guy
2022 and this is still the best video so far 😩❤️❤️thank you
Khan Academy is super real in saying
"You can learn anything".
Khan academy is awesome! so happy it exists, such an excellent resource!
How I love Sal! He makes my life so much easier!
when you are in college and have 2 hours to study for your exam...... videos go onto a 3.0 speed at the minimum
Thank you for the video though! very helpful!
How did the exam go?
Really informative video, it helped me understand many things. Thank you!
Thank you for making my life easier
Hi there! In 12:07 (as seen on the 3rd quadrant of the screen), should the Hydrogen cation bond with the Br^- to form water + HBr? Thank you
I thought the same thing but I think since it's an aqueous solution and HBr is a strong acid, the HBr would pretty much immediately dissociate upon formation leaving behind the H3O+ and Br-.
@@SJ-ig1jc Oh, you have a point! Thanks for the explanation for me and for other people reading this! :D
@@SJ-ig1jc Didn't even think of that, thanks!
Sometimes you say carbon but you mean something else :D even in your other videos. Anyway, thank you so much! :)
Hello
Because I wanna learn English by chatting with a foreigner
If you are interested than please give me a quick reply. I am waiting for your reply
Thank you.....
And my age is 17
Why is the oxygen not a weak nucleophilic when it's bonding with the propane? Why is it neutral?
Why would the partially negative O in the H2O attack the partially negative H that was part of the original nucleophile? Wouldn't those two molecules repel?
in 7:49 why does the oxygen have a positive charge? its following the octet rule it should be satisfied this way...
Ah man, I just sat my chem test today without watching this haha
A wonderful explanation! thank. you so much!!
This video is really useful to understand the SN1 reaction... Also You have nice voice that I like :D Thank you for the video!
Where r u now
no need to say more... you're the best
pure music to my ears, I love this organic chem stuff, thanks man!
Why the bromide ion has to leave from the carbon atom?
your explanation is soo clear and good. thank you so much Sir
This was super helpful, but I couldn't sit through it without wanting to rip my hair out because he kept repeating himself
That's kind of his thing. I still wait for a day when someone will edit these videos and cut out all those repetitions, but until then, all we can do is use to it :q
Thank you sir for saving me
i'm sorry but i don't get why you added the second water molecule ? what was the reason ? does it mean that there are two nueclophiles in the reaction ?
Why don't the hydrogen from the hydronium ion move to the bromide ion to form hydrobromic acid?
Because otherwise that water molecule would be too shy to attack the carbon when the bromine is around ;J
Neutral oxygen is not a very good nucleophile, because oxygen is very electronegative and it would rather keep those lone pairs to itself than share it with some other atom. Therefore it has to wait until the bromide wouldn't be there anymore and leave a strong positive charge behind, on that carbon. Then this positive charge is strong enough to attract even as weak nucleophile as that oxygen and bond with it.
Perfect
Why carbocation + eventhough it lose 2e- by giving it to bromide ion so it suppose to be 2+ on carbocation right?
Why doesn't the Bromide ion deprotonate the Hydronium to make it H2O and HBr?
Caleb Myers Look at the pKa values
Hydronium? Wait so throwing that molecule into water will make the water turn more and more acidic?
This is basically what "acidic" means: protonated water. Acids are willing to lose their hydrogens (protons), and they do that by protonating water and producing those hydronium ions in it. The more hydronium ions, the more "acidic" is the acid. The amount of those hydronium ions is basically (or acidically :J ) what the pH scale measures.
Sir please explain and compare the rate of reaction of SN1 of 6-chlorohexene and chlorohexane that which is more reactive in sn1.
Question...Wouldn't the bromide ion react with the hydronium ion?
Sakina Batool Oxygen does not have a d orbital, vacant that is. So BrH3O would be very unstable. And thus would dissociate to form HBr and H2O
isnt the carbocation a trigonal planar? why are u drawin 3d?
even in 3d, it's still planar
@@SamskrutiMurthy True, but wedges and dashes are a notation that is being used specifically to show 3D structures (those that cannot be drawn on a plane with ordinary lines). Because of that, using them for trigonal planar structures is misleading, because it makes people think about tetrahedral geometry instead.
@@bonbonpony Ooh, thanks for the clarification :)
thanks
Thankyou!
"sharing this pain"
Isn't it 2-Bromo-2-trimethylpropane ???
no. it 2-Bromo-2-methylpropane. because the longest carbon chain has 3 carbon, and on carbon number 2, theres a bromine and a methyl group
Thank you!
Could we do HBr?
Thanks
plz explain the naming twice whenever u will do again
how do we reference this?
brilliant
wont it be propene instead of propane
No, propene is an alkene, double bond. Propane is an alkaine. Single bond.
Stupid question time.
Charge comes in unit multiples except in quarks.
What is this "partial charge"@4:30?
You can also regard it as a dipole moment. The electrons are spread unequally between the two nuclei, favoring the oxygen due to it's higher electronegativity. All the charges distributed carry as a group a whole charge number, but there are some areas where fractional charges reside.
Andrei Bubeneck Okay. Let me see if I got it. The probability wave of the electron has a denser portion. This means that part of the molecule is a concentration of electric charge that is not centered on the nucleus. This makes it asymmetric with respect to the electric field, just as a compass needle is asymmetric with respect to the magnetic field. Close?
George Steele Yeah. The charge is asymmetrically distributed.
annndddddd I STILL don't understand.
plz come to malaysia's uni(UCSI)...and be my lecturer xD
Any more wishes? Maybe he should also pay your tuition? :J
Respected teacher... I had a doubt, why will oxygen get a positive charge bcos of sharing electrons? Thank you;))
Because oxygen doesn’t have enough electrons to be happy, it’ll become a positively charged ion. H3O+ for instance.
The same for negatively charged oxygen, though instead of having to little electrons it has too many, OH-
(Too many electrons to be a neutral atom)
If I’m wrong please correct me and tell me why.
Could you please repeat the bit where you said about the stuff?
You know you can replay the video? :q
You write too small, had to squint
thank you!