Sn1 reactions introduction

[@benwilliams1889]

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.

[@rawan4588]

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

[@huzaifamasood3724]

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..!

[@imranmehmood85]

Khan Academy is super real in saying "You can learn anything".

[@TheShadowDragon777]

Bromos before H2Os!

[@TheShadowDragon777]

Also good explanations.

[@Arham1716]

Seriously This Is Fabulous.. Every video from Sal is Understandable.Respect to this Guy

[@calmmind4500]

2022 and this is still the best video so far 😩❤️❤️thank you

[@gmcenroe]

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

[@fredbongiorno5870]

Khan academy is awesome! so happy it exists, such an excellent resource!

[@andoan4510]

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!

[@isabellalora6533]

How did the exam go?

[@mariajosepedrozaromo567]

How I love Sal! He makes my life so much easier!

[@tarawelch9527]

Thank you for making my life easier

[@angiem7030]

Really informative video, it helped me understand many things. Thank you!

[@TheTonyMontanah]

Ah man, I just sat my chem test today without watching this haha

[@user-e8vbdm3wjx]

This video is really useful to understand the SN1 reaction... Also You have nice voice that I like :D Thank you for the video!

[@naman6877]

Where r u now

[@jesseeisenburg6204]

Why is the oxygen not a weak nucleophilic when it's bonding with the propane? Why is it neutral?

[@balamurganp7224]

Why the bromide ion has to leave from the carbon atom?

[@kijoonahn6822]

no need to say more... you're the best

[@theoriginalG99]

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

[@SJ-ig1jc]

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-.

[@theoriginalG99]

@@SJ-ig1jc Oh, you have a point! Thanks for the explanation for me and for other people reading this! :D

[@calebmyers6392]

@@SJ-ig1jc Didn't even think of that, thanks!

[@andreale6089]

This was super helpful, but I couldn't sit through it without wanting to rip my hair out because he kept repeating himself

[@bonbonpony]

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

[@baileywallen9954]

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?

[@benitajohn3199]

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 ?

[@aureliuswirawan4502]

Why don't the hydrogen from the hydronium ion move to the bromide ion to form hydrobromic acid?

[@bonbonpony]

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.

[@calebmyers6392]

Why doesn't the Bromide ion deprotonate the Hydronium to make it H2O and HBr?

[@ansonoyoung5198]

Caleb Myers Look at the pKa values

[@Wealily]

Sometimes you say carbon but you mean something else :D even in your other videos. Anyway, thank you so much! :)

[@DeepakSharma-bk7fr]

Hello

[@DeepakSharma-bk7fr]

Because I wanna learn English by chatting with a foreigner

[@DeepakSharma-bk7fr]

If you are interested than please give me a quick reply. I am waiting for your reply

[@DeepakSharma-bk7fr]

Thank you.....

[@DeepakSharma-bk7fr]

And my age is 17

[@maibarak1921]

in 7:49 why does the oxygen have a positive charge? its following the octet rule it should be satisfied this way...

[@melodiousmag]

A wonderful explanation! thank. you so much!!

[@cuishancs7292]

Thank you sir for saving me

[@ruata1719]

your explanation is soo clear and good. thank you so much Sir

[@bhavyayadav9586]

wont it be propene instead of propane

[@e.b5911]

No, propene is an alkene, double bond. Propane is an alkaine. Single bond.

[@sakinabatool4649]

Question...Wouldn't the bromide ion react with the hydronium ion?

[@ronakroshan129]

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

[@davidsweeney111]

pure music to my ears, I love this organic chem stuff, thanks man!

[@ahmadazrael3948]

Why carbocation + eventhough it lose 2e- by giving it to bromide ion so it suppose to be 2+ on carbocation right?

[@Potimawisus20]

isnt the carbocation a trigonal planar? why are u drawin 3d?

[@SamskrutiMurthy]

even in 3d, it's still planar

[@bonbonpony]

@@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.

[@SamskrutiMurthy]

@@bonbonpony Ooh, thanks for the clarification :)

[@shaiemhawlader7439]

how do we reference this?

[@bobu5213]

Hydronium? Wait so throwing that molecule into water will make the water turn more and more acidic?

[@bonbonpony]

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.

[@lmgoth6204]

Could we do HBr?

[@ahnafkabir3703]

"sharing this pain"

[@niloofarkh4779]

Perfect

[@rounakraha5679]

plz explain the naming twice whenever u will do again

[@olivias2414]

Isn't it 2-Bromo-2-trimethylpropane ???

[@dawnnqoehadebe3242]

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

[@noureldin3036]

thanks

[@Adrijcardenas]

annndddddd I STILL don't understand.

[@George4943]

Stupid question time. Charge comes in unit multiples except in quarks. What is this "partial charge"@4:30?

[@chemplanes10]

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.

[@George4943]

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?

[@geekbuddy4]

George Steele Yeah. The charge is asymmetrically distributed.

[@sudheershinishini1372]

Thankyou!

[@ronakshah2158]

Thanks

[@surat8591]

Thank you!

[@danredfearn358]

Could you please repeat the bit where you said about the stuff?

[@bonbonpony]

You know you can replay the video? :q

[@colinma5614]

brilliant

[@bikarmjeetsingh5925]

Sir please explain and compare the rate of reaction of SN1 of 6-chlorohexene and chlorohexane that which is more reactive in sn1.

[@ケルシー-j2f]

plz come to malaysia's uni(UCSI)...and be my lecturer xD

[@bonbonpony]

Any more wishes? Maybe he should also pay your tuition? :J

[@sashwatyo1293]

Respected teacher... I had a doubt, why will oxygen get a positive charge bcos of sharing electrons? Thank you;))

[@gabedaniel9948]

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)

[@gabedaniel9948]

If I’m wrong please correct me and tell me why.

[@cheriedeb1217]

You write too small, had to squint

[@tanyaphondanpipat2267]

thank you!