Just letting you know that you're still helping students, 8 years later. Your website is what is helping me feel prepared for my ochem final when I didn't know where to start.
@Leah4sci Жыл бұрын
Wow, always happy to help! I hope the final goes well!
@yourfuturedocburenbeiya5 жыл бұрын
You’re so awesome, and the best out there, Leah and I could only wish I could be as great as you in understanding ochem with this level of understanding. I honestly love checking out the resources you put out there for us which helped/helps me more than you know so I at least wanted to let you know that! I also appreciate how clear, concise and colorful your explanations are and love your enthusiasm which I can tell from your voice that you’re truly passionate about these topics and what you do..Thank you!!! :)
@Leah4sci5 жыл бұрын
awww! thank you so much for the wonderful feedback. You are very much welcome! Always glad to help. All the best! :)
@masghar148 жыл бұрын
God bless your soul.
@Leah4sci7 ай бұрын
thank you!
@safiadjili76208 жыл бұрын
Thank you!!!! You saved my life! I love the way you make things sound sooo easy! Thanks from France!
@Leah4sci7 ай бұрын
You're very welcome, happy to help!
@Deltaworks235 жыл бұрын
Outstanding! I was struggling to understand my textbook's explanation and example. Your explanation is fantastic.
@Leah4sci5 жыл бұрын
awwwee! you're welcome! Glad to help!
@notjustin21675 жыл бұрын
Excellent & clear explanation. Thank you so much. Please keep up the good work! So much easier to follow than "The organic chem tutor"
@Leah4sci5 жыл бұрын
Thank you for the nice feedback. You are very much welcome.
@zaminahmed2973 жыл бұрын
Well he is more to find problems and work through those. This is more of telling you exactly the mechanism. THey both work in different ways
@pmluciano9 жыл бұрын
I love you, thank you so much! This video will help me pass Organic Chemistry II :)
@Leah4sci6 ай бұрын
You're so very welcome!
@mustakim21445 жыл бұрын
Thank you so much Leah! Your explanation is so clear and makes everything much easier to understand! Keep up the good work! :)
@Leah4sci5 жыл бұрын
Glad the video helped you understand the topic better! You are very much welcome!
@insert-jeff-here7 жыл бұрын
Thank you so much! Great explanation, the colors helped so much.
@Leah4sci8 ай бұрын
You're so very welcome!
@user-oj3ts8ns3n5 жыл бұрын
I am a student studying in Korea🇰🇷 It was very helpful. thank you!!👏👏
@Leah4sci5 жыл бұрын
Glad I could help!
@rashmikiranpandit89627 жыл бұрын
thanks a ton...today i understood the exact reason for formation of a non classical carbocation...😘
@Leah4sci8 ай бұрын
You're very welcome, happy to help!
@mikeretana74398 жыл бұрын
I love your voice When she hit you with that "leah heerree"
@Leah4sci7 ай бұрын
Aww thanks
@eraycaliskan677 жыл бұрын
very helpful for students! good job Miss Fisch
@Leah4sci8 ай бұрын
You're so welcome, I'm happy to help!
@user-gh1ns8uy7v6 ай бұрын
Thanks for the good explanation
@Leah4sci6 ай бұрын
You're welcome, so happy to help!
@omgitsvale7 жыл бұрын
everything makes sense now, thank you so much
@Leah4sci7 ай бұрын
You're very welcome!
@mohamedreda96359 жыл бұрын
hey leah i love you videos so much, they've been helping me to study a lot recently. can you make videos about alkene reactions ? thank you
@Leah4sci6 ай бұрын
You're so very welcome! You can find all of my resources matched to the topic you're studying here: leah4sci.com/syllabus
@FRAN1010109 жыл бұрын
Excellent so clear! Thank you so much!
@Leah4sci6 ай бұрын
You're very welcome!
@ishanimajmudar18025 жыл бұрын
Thanks for creating such a helpful video!! Could you explain where the lone pair on mercury comes from at 2:20? Thanks!
@Leah4sci5 жыл бұрын
This is part of Mercury’s configuration at this oxidation number. Not required knowledge at the undergrad level so easier to take as fact.
@bhanavipanwar44355 жыл бұрын
Wonderfully explained!
@Leah4sci5 жыл бұрын
Thanks for your kind words :)
@khaliljammal9 жыл бұрын
We just learned this. It was so confusing until now!
@Leah4sci6 ай бұрын
Happy to help clear things up!
@bwalyadoubtitias9451 Жыл бұрын
Very helpful congratulations madam 👍👍
@Leah4sci Жыл бұрын
So glad to hear it!
@osmanypalma57066 жыл бұрын
just saved me from going nuts.!! thank you
@Leah4sci6 жыл бұрын
Whew! Glad I could help!
@shawnrusselld8 жыл бұрын
I love your videos. So much help!! Thank you.
@Leah4sci7 ай бұрын
Glad you love them and happy to help!
@phudoan375 жыл бұрын
Thank you very much.
@Leah4sci8 ай бұрын
You're welcome!
@Noahmalacad2 жыл бұрын
thanks leah
@Leah4sci2 жыл бұрын
You're welcome!
@khamilatissah56542 жыл бұрын
I can’t thank you enough I have subscribed and recommended you to others to subscribe too. Thanks so much
@Leah4sci2 жыл бұрын
You're so welcome, and thanks for referring others to my channel! That's the highest praise I can get!
@user-gh1ns8uy7v5 ай бұрын
Am helped very much ❤❤
@Leah4sci5 ай бұрын
So glad I could help!
@sammmysam12919 жыл бұрын
Thank you!
@Leah4sci6 ай бұрын
You're so very welcome!
@Punjabispitta8 жыл бұрын
Thank you so much!!
@Leah4sci7 ай бұрын
You're very welcome!
@divyanshurawat90837 жыл бұрын
thanku very much.... it was a great explanation... helped a lot...😊😊
@Leah4sci7 жыл бұрын
You're very welcome! I'm glad it helped!
@arsenal789107 жыл бұрын
at min 2:58, what do you mean that the positive charge on the carbon transferred to Hg, making it positive?
@Leah4sci7 жыл бұрын
positive charges are not transferred. However, when a positive atom pulls electrons away from another atom that other atom is now slightly less negative. see my video on polar bonds which explains this concept in more detail.
@eman41595 ай бұрын
When we reducing with hydride, what the mechanism that happened? What makes the H placed the HgOAC ?
@Leah4sci5 ай бұрын
This mechanism isn't well understood / taught. That's whY i skipped over that bit (as I explained in the video)
@tiggerthecat19 жыл бұрын
One thing thing you should explain is how the mercury is able to form a bond with the acetate while still having an inert lone pair. Confused me for days and have just been told that the bond between it and the acetate is actually between the 5d10 electron orbitals and not the 6s2's!
@arsenal789107 жыл бұрын
damn i never knew bond is between the 5d10 orbitals.. not sure how that works but was confused about this as well, thanks
@arsenal789107 жыл бұрын
Also, why is there a lone pair when mercury is bonded with 1 acetate and no lone pair when mercury is bonded with 2 acetates?
@m.t14466 жыл бұрын
Woman this video is life.
@Leah4sci8 ай бұрын
Awesome!
@m.t14468 ай бұрын
@@Leah4sci omg 5 years later your teachings let me get into a PhD program currently a PhD candidate. Leah, thank you so much for all your hard work we appreciate you so much. Proud to be a woman in stem too.
@deepakpanjwani52145 жыл бұрын
In presence of Mercuric ion nucleophilic reaction occurs whether there is carbon carbon double bond. So why this reaction is known as electrophilic addition
@deepakpanjwani52145 жыл бұрын
Pl z mam reply fast
@Leah4sci5 жыл бұрын
I'm sorry, but I don't offer tutoring through KZfaq comments. For help with this and more, I recommend joining the organic chemistry study hall. Full details: leah4sci.com/join
@tinimeshack22422 жыл бұрын
What is the product formed when i carry out oxymercuration-demercuration hydration of a benzyl methyl ketone like 1-phenyl-3-butanone?
@Leah4sci2 жыл бұрын
I'm sorry, but I don't offer tutoring over social media. For help with questions like this and more, I recommend joining the organic chemistry study hall. Details: leah4sci.com/join or contact me through my website leah4sci.com/contact/
@Syvmana8 жыл бұрын
Thank you so much!
@Leah4sci7 ай бұрын
You're very welcome!
@rachelchristian6721 Жыл бұрын
I had a quick question regarding these alkene reactions...are they all reversible?
@Leah4sci Жыл бұрын
Most organic reactions are reversible, under the right conditions. For help with questions like this and more, I recommend joining the organic chemistry study hall. Details: leah4sci.com/join or contact me through my website leah4sci.com/contact/
@kenhagiya5652 жыл бұрын
Awesome video, thank you so much! I just have a question at 3:05, when you say that the carbons have a slight positive charge. Why is that? The electronegativity values of carbon (2.5) and mercury (1.9) tell otherwise... Or is it more like mercury "sharing" that positive charge through the bond?
@Leah4sci2 жыл бұрын
The electrons in the bond with mercury will gravitate towards that positive charge on mercury, leaving a partial positive (not a full positive) charge on the carbons. So if mercury and carbon were both neutral, you would be absolutely right. The electrons would gravitate towards what is more electronegative. But in this case, the mercury is not neutral. It holds a full positive charge. And electrons are attracted to positive charges.
@kenhagiya5652 жыл бұрын
@@Leah4sci Ohh, thank you for the explanation. It makes sense now. As always, love your videos!
@shadowkxm11 ай бұрын
where did the hg lone pair come from? at 2:38
@Leah4sci11 ай бұрын
If you write the electron configuration of Hg, you'll see that it has valence electrons that are present on the outermost shell of the atom. This lone pair is more than likely being pulled from the 5d subshell.
@Supsup5168 жыл бұрын
why did HG go to the primary than secondary if the secondary is the more stable one
@ayummuchan23748 жыл бұрын
markovnikov rule says that you should add the nucleophile to the carbon attached to the less carborn (more hydrogen) and that's why she add HgoAc to the primary carbon.
@Supsup5168 жыл бұрын
***** Thanks for the reply!
@Leah4sci3 ай бұрын
If Hg initially holds on to bot a primary and secondary carbon, the secondary carbon will have more partial positive character and THAT is where the incoming nucleophile will attack. In doing so, it breaks the bond between that carbon (secondary) and is no longer attached. However, because it didn't break the bond between Hg and primary, those 2 are still attached specifically BECAUSE it was less stable / less partial positive character
@mahmutmahmut68926 жыл бұрын
why the more substituted carbon has a bigger partial charge,and attracts the nucleophile.
@DJoeLawless5 жыл бұрын
the hyperconjugation from the p orbitals of adjacent carbon atoms has a greater stabilizing effect on a more substituted carbon. basically more neighbors = more substitution = more sharing the electron deficiency
@Leah4sci6 ай бұрын
If you're asking why the more substituted carbon has more partial charge, this has to do with carbocation stability, the more substituted the more stable. (I have a video on it here: leah4sci.com/carbocation
@myappleidmoz8 жыл бұрын
in the end product should it be syn - hydration or not ? ( i mean the H in the same side as OH )
@beingfor18258 жыл бұрын
+Rania Mahfouz Hello, if you look at the mechanism carefully, you will find out that the oxymercuration method involves the of a triangle intermediate. so, the best way would be to add from the opposite side. It is anti.
@myappleidmoz8 жыл бұрын
Ok ! ThanQ so much for helping ^^
@Leah4sci4 ай бұрын
Oxymercuration is an Anti addition (Hydroboration follows syn addition)
@sillybilly5660 Жыл бұрын
Where does acetate come from at 4:43 ?
@Leah4sci Жыл бұрын
If you go back to the first step of the mechanism at 1:11, you'll see that one of the acetate groups was kicked out from the original Hg(OAc)2 reagent. That remains in solution, up until it might be needed to remove a proton.
@sillybilly5660 Жыл бұрын
@@Leah4sci thank you Leah. Great content even all these years later!