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?
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.
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
@@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.
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.
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)
