"might do it in an indirect way" hahhaha love the subtlety :)

Stop reading the comments and get back to revision

@joehernandez1555

6 жыл бұрын

j+naveed ehsan

@luckyalam8207

5 жыл бұрын

Stfu 😎😎

@blahblah-sg4yj

4 жыл бұрын

ahahahahahahahahahaahahahah

@walaa4409

3 жыл бұрын

😂😂

@user-ec3jx9hf2j

3 жыл бұрын

tyyy

I'm in a completely unrelated field, but I enjoy these lessons on my lunch breaks. Really enjoyed this one. Thanks!

I wish I discovered these videos before I flunked A level chemistry. They really make chemistry idiot proof.

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!

3:16 let's try to name this BEAST!!!! 😂😂😂

God bless you good sir, helping with science one problem at a time, not all heros wear capes

you really helped me to understand biochem! Thank you!!!!!

Love your videos> I'm not even taking organic chemistry yet , and I still enjoy watching them .

"Indirect way"

Your videos are much easier than listening to my teacher. Vary Informative. ThankS:D

Great! ❤ 😊 Thanx for informing about the difference between ethanol and methanol!

helps a lot !! thnxx!

THIS MAKES SO MUCH SENSE NOW

Very helpful.Thanks alot.

That help me! Thank you!

OMFG i got a test tomorrow and i was sooo DESPERATE until i saw your video!!!! nice work !!

yes, i was always taught that the double/triple bond has precedence over everything else

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!

thank you

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 :)

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 ?

I think its legit to name the second compound as 2,2 dibromooct -3 -yne-5-ol

I learn everything from this man. not my professors.

@khanacademy for the 7,7-dibromo-oct-5-yn-4-ol, why wouldn't it be 2,2-dibromo-oct-3-yn-5-ol?

Thx that help me ❤️

Interesting. surely calling the molecuel 2,2-dibromooct-4-yn-5-ol. because that way you get a lower total of numbers over all.

@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

7 жыл бұрын

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

6 жыл бұрын

but can that molecule even exist?

@kanishgupta5080

5 жыл бұрын

Yes u r correct my friend it was my doubt too and according to IUPAC lowest numbering rule comes at priority

@J-Zone

5 жыл бұрын

alcohol is more prioritized than alkyne my friend.

Wow exlenet!!!

in the molecule with two bromines,wont it start with the 'hydroxy' prefix??......

you are amazing

Are there any other alcohols besides ethanol that you can drink?

NICE!

Me who just surfing videos for indian jee mains exam : " My expectation is beyond your imagination "

Wow😮

at 6;42, can't it be named as 1,3 di hydroxy propane??

Salman Khan YOU'RE THE MAN!!

I had a test on these in school. Helps out a ton!

@exploreindia3978

5 күн бұрын

Oooo...my god...12 years before..u commented on this video R u there...😅??

"Let's, let's try to name this... beast right here."

Thanks! I was learning stuff about alcohols today and you so happen to post a video about it =]

@bonjouramis9348

Жыл бұрын

سلام عليكم انت من الجزائر راني محتاجك

but in the case of alcohols, start numbering nearer the hydroxyl group. :)

What's the reason for the cyclo?

what the devise used to make this video .. help me please

Because the fact that it's an alcohol takes precedence over the fact that the carbon skeleton is of an alkane.

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

8 жыл бұрын

+aiden Moore octinol*

@marshmellow5344

2 жыл бұрын

Yes it can be!

@marshmellow5344

2 жыл бұрын

@@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

2 жыл бұрын

@@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

2 жыл бұрын

@@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 🤣

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

you teach WAAAAY better than my lame chem teacher. i wish you were my teacher...

Shouldn't the most important group, which is the OH get the lowest possible number?

0:46 noted 😂😂😂

this might do it in a more indirect way XD....funny and helpful

You sound like Scarra

It's an alcohol, so you start counting from the side closest to the -OH

he is inspired

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

6 жыл бұрын

Yamat LadyGuen it sould

@MellowMuch

5 жыл бұрын

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

are these videos that much good to prepare for iit-jee???....do reply...

4:48 can it also be named 2,2-dibromooct-3-yn-5-ol?

@kilroywashere1628

4 жыл бұрын

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.

because you always number the first carbon as the one with the C=O not necessarily the smallest

thanks :megusta:

my school taugth me "propan-1,3-diol" instead of " 1,3 propanediol". Is there any problem with mentioning either way????

how come it is propanE-1,3-diol not propan-1,3-diol???

y subtitiles? u speak perfect clear english

🎉

You do not want to drink Methanol...IT WILL KILL YOU! lol! love these videos! Thanks so much! :D

Actually it is 2,2-dibromo-oct-3-yn-5-ol. ))) But great videos! Greetings from Czech Republic )))

best teacher ever lol.

im sorry sir, but aren't alkynes supposed to be linear?

i think that alkyne group cannot be write in line formula

@goldensilverstar i was thinking the same omg

This is only system of numbering of carbons,,,, but the reactions of alchohole had not here,,😔😔

the dislikes are from bitter teachers....

This.... 10years before🥺

#41

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.

Concepts of chemistry illustrated in a story. See KZread video "Chemistry Simplified".

1:18 You do not want to drink methanol! You may not want to drink ethanol either...

*_Ich habe ein Lied gemacht, wo man die Alkanen Reihe mit Spaß lernen kann!_*

Good AND funny. :-)

The alcohol should have the lowest number.

At 3:33 the answer to your question is being answered by himself.

@stevenhelock International baccalaureate examinations.

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.

he kind of sounds like dan from gossip girl omg

@braddavis4377

4 жыл бұрын

It is him, that is what he did after the show hahahaha. Just kidding.

Isn't it supposed to be 1,5??

@sharaadsingh2038

6 жыл бұрын

For the last one

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.

because you want to give OH the lowest number always

How that alkyne is drawn give me anxiety. It should be 180 degrees

then we should ditch the E...

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

10 жыл бұрын

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

PENT...PENTANNN.....PENTANNNN 3:02 hahahahah

3:39 is he speaking GERMAN?!

wow funny

"Name this beast right here" lol wot the fuck?

كاش واحد جزاءريين هنا راني مسحقهم

Does anyone else get anoyed when he repeats what he is writing down?

@nattbheee53

7 жыл бұрын

no

@daviamantock545

6 жыл бұрын

Yes

@pankezitoxd

6 жыл бұрын

Find it really helpful, it gets it stuck in my head

So, Khan's a dirty teetotaler...