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Alcohols | Alcohols, ethers, epoxides, sulfides | Organic chemistry | Khan Academy 

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Naming alcohols. Created by Sal Khan.
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Organic Chemistry on Khan Academy: Carbon can form covalent bonds with itself and other elements to create a mind-boggling array of structures. In organic chemistry, we will learn about the reactions chemists use to synthesize crazy carbon based structures, as well as the analytical methods to characterize them. We will also think about how those reactions are occurring on a molecular level with reaction mechanisms. Simply put, organic chemistry is like building with molecular Legos. Let's make some beautiful organic molecules!
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
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19 сен 2010

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Комментарии : 129   
@a.6054
@a.6054 9 лет назад
"might do it in an indirect way" hahhaha love the subtlety :)
@34naveed
@34naveed 8 лет назад
Stop reading the comments and get back to revision
@joehernandez1555
@joehernandez1555 6 лет назад
j+naveed ehsan
@luckyalam8207
@luckyalam8207 5 лет назад
Stfu 😎😎
@blahblah-sg4yj
@blahblah-sg4yj 4 года назад
ahahahahahahahahahaahahahah
@walaa4409
@walaa4409 3 года назад
😂😂
@user-ec3jx9hf2j
@user-ec3jx9hf2j 3 года назад
tyyy
@PopArt
@PopArt 14 лет назад
I'm in a completely unrelated field, but I enjoy these lessons on my lunch breaks. Really enjoyed this one. Thanks!
@0037sammie
@0037sammie 12 лет назад
I wish I discovered these videos before I flunked A level chemistry. They really make chemistry idiot proof.
@djungelskogs_bf
@djungelskogs_bf 6 лет назад
my chemistry teacher told me this Friday that I'll have a oral exam about this topic tomorrow, because I missed the exam, and I was very nervous about it, but this actually helped me! Thank you!
@faris3061
@faris3061 4 года назад
"Indirect way"
@VungL
@VungL 7 лет назад
3:16 let's try to name this BEAST!!!! 😂😂😂
@dinok4774
@dinok4774 7 лет назад
God bless you good sir, helping with science one problem at a time, not all heros wear capes
@fernandoburrola
@fernandoburrola 11 лет назад
you really helped me to understand biochem! Thank you!!!!!
@SpacySpaceCadet
@SpacySpaceCadet 14 лет назад
Love your videos> I'm not even taking organic chemistry yet , and I still enjoy watching them .
@VivekDS1
@VivekDS1 12 лет назад
I think its legit to name the second compound as 2,2 dibromooct -3 -yne-5-ol
@riafrancis3803
@riafrancis3803 11 лет назад
helps a lot !! thnxx!
@camilagace
@camilagace 13 лет назад
Your videos are much easier than listening to my teacher. Vary Informative. ThankS:D
@xYafax
@xYafax 11 лет назад
That help me! Thank you!
@jennywanderervlogs5645
@jennywanderervlogs5645 7 лет назад
thank you
@Emannn97
@Emannn97 11 лет назад
I might've missed this being mentioned at some point in the playlist .. but I do not understand why and when would we start numbering the Carbon atoms from right to left or vice versa. Help? :) Oh, and I've been getting a lot of help from your videos and obsessed a lot over them at school which resulted in my teacher using your work to help us understand better! Thank you!
@TheTakeover55
@TheTakeover55 12 лет назад
yes, i was always taught that the double/triple bond has precedence over everything else
@minhdiszles
@minhdiszles 12 лет назад
THIS MAKES SO MUCH SENSE NOW
@abdulaleemgaad3140
@abdulaleemgaad3140 3 года назад
Very helpful.Thanks alot.
@WalauDark
@WalauDark 12 лет назад
OMFG i got a test tomorrow and i was sooo DESPERATE until i saw your video!!!! nice work !!
@andresramirez1786
@andresramirez1786 7 лет назад
@khanacademy i believe you made a mistake at 3:53 supposing that you should numbering the chain from the opposite direction so that the alkyne would get the lowest number possible
@rwayle
@rwayle 7 лет назад
Good suggestion, but the alcohol is the highest priority functional group in this molecule, and the rule is we need to give it the lowest number possible.
@indiewalnut8956
@indiewalnut8956 7 лет назад
but can that molecule even exist?
@kanishgupta5080
@kanishgupta5080 5 лет назад
Yes u r correct my friend it was my doubt too and according to IUPAC lowest numbering rule comes at priority
@J-Zone
@J-Zone 5 лет назад
alcohol is more prioritized than alkyne my friend.
@AliAhmed-ln2ns
@AliAhmed-ln2ns 5 лет назад
Thx that help me ❤️
@curtpiazza1688
@curtpiazza1688 11 месяцев назад
Great! ❤ 😊 Thanx for informing about the difference between ethanol and methanol!
@ILoveyouxoxo93
@ILoveyouxoxo93 12 лет назад
I learn everything from this man. not my professors.
@sidrahzz485
@sidrahzz485 4 года назад
Hi guys i recently finished my biomed degree so revisiting all the resources i used lool reminiscing massive fan of khan academy.. starting my uni course in medicine if anyone want some inside info lmk more than happy to help :)
@ruturajnerurkar7530
@ruturajnerurkar7530 9 лет назад
you are amazing
@wulfaxe7661
@wulfaxe7661 6 лет назад
NICE!
@user-ys4ng2xd1j
@user-ys4ng2xd1j 3 месяца назад
Wow exlenet!!!
@gmtom19
@gmtom19 11 лет назад
Interesting. surely calling the molecuel 2,2-dibromooct-4-yn-5-ol. because that way you get a lower total of numbers over all.
@mkamakacci
@mkamakacci 11 лет назад
Salman Khan YOU'RE THE MAN!!
@user-or1dq5vq1c
@user-or1dq5vq1c 2 месяца назад
Wow😮
@tuompie
@tuompie 12 лет назад
I had a test on these in school. Helps out a ton!
@exploreindia3978
@exploreindia3978 19 дней назад
Oooo...my god...12 years before..u commented on this video R u there...😅??
@xXSquishyXx8D
@xXSquishyXx8D 11 лет назад
Because the fact that it's an alcohol takes precedence over the fact that the carbon skeleton is of an alkane.
@tharunjs9480
@tharunjs9480 3 года назад
Me who just surfing videos for indian jee mains exam : " My expectation is beyond your imagination "
@applezheng97
@applezheng97 11 лет назад
for the cyclohexanol would i matter if i wrote it as 1-cyclohexanol? And for the 2nd example can i count starting from the other side ( right to left) instead ?
@nana____fox
@nana____fox 12 лет назад
but in the case of alcohols, start numbering nearer the hydroxyl group. :)
@SWatchik
@SWatchik 12 лет назад
@khanacademy for the 7,7-dibromo-oct-5-yn-4-ol, why wouldn't it be 2,2-dibromo-oct-3-yn-5-ol?
@Haku1234567890
@Haku1234567890 11 лет назад
It's an alcohol, so you start counting from the side closest to the -OH
@Dig2GoldZ
@Dig2GoldZ 14 лет назад
Thanks! I was learning stuff about alcohols today and you so happen to post a video about it =]
@bonjouramis9348
@bonjouramis9348 Год назад
سلام عليكم انت من الجزائر راني محتاجك
@alexlm2
@alexlm2 10 лет назад
You sound like Scarra
@sheldonmachado1005
@sheldonmachado1005 11 лет назад
in the molecule with two bromines,wont it start with the 'hydroxy' prefix??......
@ThePeterDislikeShow
@ThePeterDislikeShow 14 лет назад
Are there any other alcohols besides ethanol that you can drink?
@rsoderling30
@rsoderling30 13 лет назад
"Let's, let's try to name this... beast right here."
@Joelpenda
@Joelpenda 11 лет назад
he is inspired
@VungL
@VungL 7 лет назад
0:46 noted 😂😂😂
@Hardstylecraze
@Hardstylecraze 12 лет назад
thanks :megusta:
@Amina9871
@Amina9871 12 лет назад
this might do it in a more indirect way XD....funny and helpful
@TheMonaMonster
@TheMonaMonster 13 лет назад
you teach WAAAAY better than my lame chem teacher. i wish you were my teacher...
@harryfire411
@harryfire411 3 года назад
Please make text a little bigger so it can be read on a smartphone Also purple over black doesn't contrast well enough to be visible on smartphone
@ADOSMOORINOS
@ADOSMOORINOS 8 лет назад
For the 2nd alcohol, if I was finding your way of naming it confusing, would an alternative be 7,7-dibromo-4-hydroxy-5-octyne?
@gccgmt1079
@gccgmt1079 8 лет назад
+aiden Moore octinol*
@marshmellow5344
@marshmellow5344 2 года назад
Yes it can be!
@marshmellow5344
@marshmellow5344 2 года назад
@@gccgmt1079 i think it can't be octinol since we've already used the OH group as a prefix, which was the "hydroxy" in the name. So in this alternative name, since we've used OH as a substituent, we will have the "yne" as suffix for the parent chain
@ADOSMOORINOS
@ADOSMOORINOS 2 года назад
@@marshmellow5344 This is hilarious to me, because I understand none of this now. Absolutely 0 F*cking Percent of this, Way to go me 5 years back though
@marshmellow5344
@marshmellow5344 2 года назад
@@ADOSMOORINOS hahahaha! I understand. In a few years I'll probably forget all of these too. Before replying, i thought that it's no use replying anymore since this question was from a few years ago and I'm extra late 🤣 but I realized that in the future ppl might scroll through the comments and stumble across this question, so I answered to give clarity. I hope I helped them 🤣
@patakisfriend
@patakisfriend 11 лет назад
You do not want to drink Methanol...IT WILL KILL YOU! lol! love these videos! Thanks so much! :D
@abhiramjoshi827
@abhiramjoshi827 8 лет назад
at 6;42, can't it be named as 1,3 di hydroxy propane??
@Ponnyboy555
@Ponnyboy555 12 лет назад
Actually it is 2,2-dibromo-oct-3-yn-5-ol. ))) But great videos! Greetings from Czech Republic )))
@will8831
@will8831 14 лет назад
best teacher ever lol.
@yukiibeauty07
@yukiibeauty07 12 лет назад
because you always number the first carbon as the one with the C=O not necessarily the smallest
@nwaoparafavour7080
@nwaoparafavour7080 2 года назад
What's the reason for the cyclo?
@babygurl25392
@babygurl25392 12 лет назад
y subtitiles? u speak perfect clear english
@santa7750
@santa7750 10 месяцев назад
🎉
@thecotboy
@thecotboy 11 лет назад
Shouldn't the most important group, which is the OH get the lowest possible number?
@amg703
@amg703 12 лет назад
@goldensilverstar i was thinking the same omg
@drx7543
@drx7543 6 лет назад
what the devise used to make this video .. help me please
@cookiezx123
@cookiezx123 11 лет назад
how come it is propanE-1,3-diol not propan-1,3-diol???
@amaansawrar5197
@amaansawrar5197 11 лет назад
the dislikes are from bitter teachers....
@danieljohnsopardenilla997
@danieljohnsopardenilla997 5 лет назад
4:48 can it also be named 2,2-dibromooct-3-yn-5-ol?
@kilroywashere1628
@kilroywashere1628 4 года назад
daniel pardenilla I think that that would be the correct name, since the location of the triple bond is prioritized over the location of the substituents.
@improvemyenglish
@improvemyenglish 12 лет назад
Concepts of chemistry illustrated in a story. See RU-vid video "Chemistry Simplified".
@Aryan45812
@Aryan45812 13 лет назад
are these videos that much good to prepare for iit-jee???....do reply...
@chander.261
@chander.261 3 года назад
im sorry sir, but aren't alkynes supposed to be linear?
@norwayte
@norwayte 14 лет назад
Good AND funny. :-)
@Starrysky0000
@Starrysky0000 3 года назад
This.... 10years before🥺
@ninaparvin1253
@ninaparvin1253 2 года назад
This is only system of numbering of carbons,,,, but the reactions of alchohole had not here,,😔😔
@bilalbhatti9898
@bilalbhatti9898 10 лет назад
The alcohol overpowers everything right? So you have to give the alcohol the lowest number which means you have to start numbering to the end of the chain that will give the alcohol the lowest number. The alcohol group is telling you where to number.
@nihayaturrohmah4230
@nihayaturrohmah4230 3 года назад
#41
@Asd_76
@Asd_76 13 лет назад
1:18 You do not want to drink methanol! You may not want to drink ethanol either...
@ladyguen
@ladyguen 6 лет назад
I'm quite confused. shouldn't the last example be a pentane? instead of propane? how did it became a propane when its structure did not show any differences on the first example except on the 2 alcohol group at both ends?
@vatsalbhatnagar5221
@vatsalbhatnagar5221 6 лет назад
Yamat LadyGuen it sould
@MellowMuch
@MellowMuch 5 лет назад
the two OH take the place of the carbons that YOU (not to point u out) are counting, so really there are only 3 carbons in that chain
@Jashish1
@Jashish1 12 лет назад
i think that alkyne group cannot be write in line formula
@tharunjs9480
@tharunjs9480 3 года назад
my school taugth me "propan-1,3-diol" instead of " 1,3 propanediol". Is there any problem with mentioning either way????
@KAiSKAjO
@KAiSKAjO 6 лет назад
*_Ich habe ein Lied gemacht, wo man die Alkanen Reihe mit Spaß lernen kann!_*
@BassmrDK
@BassmrDK 11 лет назад
At 3:33 the answer to your question is being answered by himself.
@BareClause
@BareClause 11 лет назад
The alcohol should have the lowest number.
@UlsterOrange
@UlsterOrange 12 лет назад
@stevenhelock International baccalaureate examinations.
@Gunner93_og
@Gunner93_og 12 лет назад
PENT...PENTANNN.....PENTANNNN 3:02 hahahahah
@SkukS
@SkukS 11 лет назад
then we should ditch the E...
@Caveman1992sa
@Caveman1992sa 12 лет назад
because you want to give OH the lowest number always
@AbscisicAciid
@AbscisicAciid 6 лет назад
he kind of sounds like dan from gossip girl omg
@braddavis4377
@braddavis4377 4 года назад
It is him, that is what he did after the show hahahaha. Just kidding.
@UlsterOrange
@UlsterOrange 12 лет назад
In Europe at least this video would be incorrect. You count carbons from the shortest possible end. For instance with 2-pentanol, the correct labels are: 1 2 3 2 1 not: 5 4 3 2 1 Use this for an A-Level/O-Level/International and Euro-baccalaureates and you WILL get the question wrong.
@goneill520
@goneill520 6 лет назад
How that alkyne is drawn give me anxiety. It should be 180 degrees
@goldensilverstar
@goldensilverstar 12 лет назад
"Name this beast right here" lol wot the fuck?
@sharaadsingh2038
@sharaadsingh2038 6 лет назад
Isn't it supposed to be 1,5??
@sharaadsingh2038
@sharaadsingh2038 6 лет назад
For the last one
@Kwwwwl
@Kwwwwl 12 лет назад
Why does he not just say R-OH where the R is the REST of the group which is what all organic chemists i know call it instead of a radical.
@timothybauer3160
@timothybauer3160 10 лет назад
Shouldn't the 2nd thing he named be counted the other way? That'll make it's name become 2,2-dibromo oct-3-yn-5-ol.
@robbycoon7812
@robbycoon7812 10 лет назад
In this molecule, since it is an alcohol, the priority of numbering is given to the alcohol group(OH). The carbon with the OH attachment is counted from the left giving it the number 4 versus from the right giving it a higher number of 5
@hemant1993
@hemant1993 14 лет назад
wow funny
@D_A_D_
@D_A_D_ 13 лет назад
3:39 is he speaking GERMAN?!
@Menegoth
@Menegoth 9 лет назад
So, Khan's a dirty teetotaler...
@TrulyF4
@TrulyF4 8 лет назад
Does anyone else get anoyed when he repeats what he is writing down?
@nattbheee53
@nattbheee53 7 лет назад
no
@daviamantock545
@daviamantock545 6 лет назад
Yes
@pankezitoxd
@pankezitoxd 6 лет назад
Find it really helpful, it gets it stuck in my head
@bonjouramis9348
@bonjouramis9348 Год назад
كاش واحد جزاءريين هنا راني مسحقهم
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