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I have been watching your videos since Grade 7, and now I'm preparing for my IBMYP E-Assessments in Grade 10. Thank you so much for always having my back!!
Whenever I search for tutorial videos about Organic Chemistry and see JG here, truly my heart always finds peace because the best is explained here! Love from Papua New Guinea🇵🇬❤
Just wanted to say that you have helped me SO much throughout Organic Chem 1 and 2, your videos are so easy to follow and I love how you give us a moment to try and solve them on our own before giving the answers with a clear explanation.
We had a topic about this last Tuesday and I can't understand anything but when I searched for alcohol nomenclature, I realized that the lesson is not hard, it's just the way of teaching. Thank you Mr. Organic Chemistry ❤
I had bad chemistry teachers all my life. When we once opened up to our biology teacher that our school doesnt have good chemistry teachers she told us that its normal to feel like this and that she too didnt have good chemistry teachers when she was our age. So i thought its just how the subject is, we cant do anything abt it. But now my opinion has changed. Good chem teachers do exist!! They are just rare.... I should have found this channel at the start of the year, it would have helped me a lottt but thats fine, better late than never right!
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 :)
When you hear it, it sounds sooooo crisp, almost like eating chips and the sound when u crunch chips down. So..... which means it’s just you because I don’t like the sound of Chips being eaten.
It is because Methoxy is the substituent and butanol is the parent chain because it contains more carbons. Technically the parent chain is butane, but it is changed to butanol due to the -OH group. In IUPAC the substituent comes before the parent chain.
Pretty late reply, but, the last line is a representation of the bond between the last carbon atom to the OH group. The line may confuse you to think it's another carbon atom along with which OH is attached, but it is not So, /\/OH = Propanol, NOT Butanol /\/\/OH = Pentanol , NOT Hexanol
how come OH is always 1 on cycloalkanes, but depending on where it is located in a regular alkane its not always 1? Is it because theres only 2 ways to count on alkanes (left to right) but at least 6-12 ways to count on cycloalkane rings?
Methane is CH4. Methyl is CH3. Methyl is methane without a hydrogen so it can form a single bond to attach to the molecule with the remaining electron on the carbon. Ethane is C2H6. Ethyl is C2H5, or CH2CH3. Ethyl is ethane without a hydrogen so it can form a single bond to attach to the molecule with the remaining electron on the carbon. When he called it ethyl he was right.
So in a structure consisting of an alkyl substituent, a double bond, a triple bond, a halogen substituent, a hydroxyl substituent and an alkoxy substituent all at different postions along the parent carbon chain, what will be the order of priorities when numbering the parent chain?
no dear. Naming is done mainly by knowing the longest continuous carbon chain first which gives the parent name. Besides, in alcohols the OH group is given a number meaning it's a substituent but with your naming that means there's a methyl group as a substituent and it's on carbon 1.
ortho- is used when the substituent is right next to the OH- group meta- is used when the substituent is 1 carbon away from the OH- para- is used when the substituent is 2 carbons away from the OH- group (or opposite with the OH- group)
If you have one hydroxy (-OH) group, you dont use the 'e'. For example, Butan-ol but I you have more thatn one hydroxy group, then you use and 'e' and specify the number of hydroxy groups you have by usingthe prefix di, tri, etc. before -ol. For example HO-H2C-CH2-OH would be Ethan'e'-1,2 diol.
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I passed most of my exams because of you.. thank you!
Passed?!
@@phurbutsering4485 and most 😂
@@phurbutsering4485 LOL
Like, he helped you with most of your exams or you only passed most of them
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Not all heroes wear capes, some make chemistry videos on RUclips
Amazing
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Wow... 3 years old comment but still legendary 😂
@@s.m.rgamerz1611 I feel the same
I have been watching your videos since Grade 7, and now I'm preparing for my IBMYP E-Assessments in Grade 10. Thank you so much for always having my back!!
Whenever I search for tutorial videos about Organic Chemistry and see JG here, truly my heart always finds peace because the best is explained here! Love from Papua New Guinea🇵🇬❤
Just wanted to say that you have helped me SO much throughout Organic Chem 1 and 2, your videos are so easy to follow and I love how you give us a moment to try and solve them on our own before giving the answers with a clear explanation.
I have been Watching ur videos since i was grade 9 and now im grade 12 , THanks for helping me Through this tough years
We had a topic about this last Tuesday and I can't understand anything but when I searched for alcohol nomenclature, I realized that the lesson is not hard, it's just the way of teaching. Thank you Mr. Organic Chemistry ❤
I had bad chemistry teachers all my life. When we once opened up to our biology teacher that our school doesnt have good chemistry teachers she told us that its normal to feel like this and that she too didnt have good chemistry teachers when she was our age. So i thought its just how the subject is, we cant do anything abt it. But now my opinion has changed. Good chem teachers do exist!! They are just rare....
I should have found this channel at the start of the year, it would have helped me a lottt but thats fine, better late than never right!
once again you have outdone yourself
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 :)
Please drop your email.
hello
Hi
Wanna talk
What’s ur ig @
Please drop your contacts
here we go 45 mins till my chem test
Why is the voice so good, or is it just me O.O
Just you
It's sooothing
When you hear it, it sounds sooooo crisp, almost like eating chips and the sound when u crunch chips down. So..... which means it’s just you because I don’t like the sound of Chips being eaten.
his voice does things to me 😩
@@miss20something33 imagining simping for a chem teacher
The best chem tutor to me
Finnaly,I can feel some organic chemistry
Thanks Sir, you cleared all my doubts
Thank you so much you are the one who helps me to pass my exams
Thank you for your ideas and teaching skills,
You're my inspiration.
7:37 Why not 1-butanol-4-methoxy?
(I haven’t watched preceding IUPAC nomenclature vids, so apologies for a dumb question)
It is because Methoxy is the substituent and butanol is the parent chain because it contains more carbons. Technically the parent chain is butane, but it is changed to butanol due to the -OH group. In IUPAC the substituent comes before the parent chain.
you are the best teacher in the world I should say
Thanks for sharing this , it really helped me out .
amo este canal con todo mi corazón
Abrupt ending but very helpful, thank you.
4:00 why there is only 5 carbon group? isn't it 6?
Definitely only 5
OH is not a carbon so you don't count it as a carbon group
Pretty late reply, but, the last line is a representation of the bond between the last carbon atom to the OH group. The line may confuse you to think it's another carbon atom along with which OH is attached, but it is not
So,
/\/OH = Propanol, NOT Butanol
/\/\/OH = Pentanol , NOT Hexanol
@@soulfreefreak Thank you sirrr
Clear and concise....well done!
Can 2 propanol also be written as Propan-2-ol?
Yes I believe so
yup
how come OH is always 1 on cycloalkanes, but depending on where it is located in a regular alkane its not always 1? Is it because theres only 2 ways to count on alkanes (left to right) but at least 6-12 ways to count on cycloalkane rings?
Exactly right!
can 2:17 be written as 2-methylpropan-2-ol
yes, 2-methylpropan-2-ol is also correct. similarly, 2-Pentanol can be written as Pentan-2-ol.
why in 3:37 is 3,4-hexanediol instead of 3,4-hexanol???
Because there are 2 hydroxyl groups(OH) and we name it like "ol" and di means "2" so that's why it is hexane di ol:) I hope u get it
I do now! Thanks!
3,4-hexadiol works? 3:35
The same question!
I’ve named it the way you did.
😢😢my whole heart to you.May our Heavenly Father richly blessed you and your beloved family 👪
Wine, brandy, vodka, gin, rum, beer...
Luigi Vercotti what?
Luigi Vercotti huh
Naming alcohols HAHAHA
underrated comment
🤔This man is a superhero, but he doesn't even want to be known facially, such a rare soul on this earth. Live long
Fascinating ❤
9:31 Sir can we call this 2-Ethyl-5-Methyl-Fennel if its aromatic molecule?
Phenol
This my report and it's very hard,
Ps:i'm a grade 9 student
I’m a grade 7 student btw
Thank you very much. It has really helped me.❤❤❤
Awesome video, thanks man.
thank you for this lecture❤❤❤🎉🎉🎉
great video, it all makes sense
In some of ur videos, CH2CH3 is methane while in this video at 8:54 u called it ethane so which one of these are correct?
It's C2H5 - Ethyl..
That is an ethyl! If you saw that maybe it was a mistake or a misunderstanding on your part.
Methane is CH4. Methyl is CH3. Methyl is methane without a hydrogen so it can form a single bond to attach to the molecule with the remaining electron on the carbon.
Ethane is C2H6. Ethyl is C2H5, or CH2CH3. Ethyl is ethane without a hydrogen so it can form a single bond to attach to the molecule with the remaining electron on the carbon.
When he called it ethyl he was right.
bro I passed my exams cus of u
So in a structure consisting of an alkyl substituent, a double bond, a triple bond, a halogen substituent, a hydroxyl substituent and an alkoxy substituent all at different postions along the parent carbon chain, what will be the order of priorities when numbering the parent chain?
did u find out?
@@NoraCGVK Nope
Hydroxyl takes priority, everything else is given the numbers based on giving the hydroxyl group the lowest number
Thank you (Fri 18 Dec 2020, 5:21 PM)
I pass my cat well by watching this thanks a lot
In 3,4 _ hexanol what if I call it hexan-3,4-diol
It's still correct!!
Hes back to living up to his name
How to write carbinol names
God bless you sir
Hii, why did name the tertbutyl alcohol, propanol? Should It be butanol or am I missing something here?
Rhidita Bham
Propanol is the IUPAC name. Tertbutyl alcohol is the common name
Rhidita Bham
Hi fellow Indian 😂
Thanks! But im not indian
Rhidita Bham you are!!
So in naming ethyles and methyles do we use the one with the least number combined ??
At 1:43, can the compound (2-propanol) also be called 1-methyl ethanol?
Chereoge hi
If you come up with 1-methyl you probably haven't found the correct parent carbon chain. So in short no, you can't call it that.
no dear. Naming is done mainly by knowing the longest continuous carbon chain first which gives the parent name. Besides, in alcohols the OH group is given a number meaning it's a substituent but with your naming that means there's a methyl group as a substituent and it's on carbon 1.
clear as crystal. thx alot
not me binge watching for my exam tmrw😩
what if there is cycloalkene attached to the (OH) group how can we name it
Wait, ester has a higher priority than alkyne. The 5-methoxy-2-heptyne. Why the triple bond has a higher priority over methoxy?
That’s an ether, not an ester. Ethers do not have priority over triple bonds.
Can there be a OH and with alkanes or alkynes ?
Wow you're a good man 😂❤
How about the common names of cycloalkanol ?
Great video
wait I'm confused, why was the answer of the last example not following the alphabetical arrangement?
E is before m, and ethyl comes first here. It is alphabetically ordered
what about naming phenols with double bonds. I need to know ortho, meta, and para...
ortho- is used when the substituent is right next to the OH- group
meta- is used when the substituent is 1 carbon away from the OH-
para- is used when the substituent is 2 carbons away from the OH- group (or opposite with the OH- group)
Thank you once again.
@the organic chemistry tutor - This video is great HOWEVER - the example @ 4:30 is 5-Bromo-1-hexanol, you miscounted the carbon chain !!
No you have, the chain is only 5 carbons long.
@@rwayle Shouldn't we count the number of dots? or the segments ?
@@hfof ? you literally just count the number of carbons, he's numbered where they all are...
@@rwayle I got it by thinking about it, thanks! I wonder what score did you get 2 months ago?
@@rwayle I still don't get why it's 5 carbon chain instead of 6
I'm a little confused, but I got the spirit.
how do we know when to put "e" or get rid of "e". from examples, you used pentan and hexan"e"
If you have one hydroxy (-OH) group, you dont use the 'e'. For example, Butan-ol but I you have more thatn one hydroxy group, then you use and 'e' and specify the number of hydroxy groups you have by usingthe prefix di, tri, etc. before -ol. For example HO-H2C-CH2-OH would be Ethan'e'-1,2 diol.
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धन्यवाद गुरुजी।
oh our hero
I like this 😍
Thnks teacher 😘 ❤
God bless you!
Can’t the last example be 1-Ethyl-4-methylcyclohexan-2-ol?
No, because the alcohol has to be on carbon #1 when it’s a ring
You’re awesome
thank you sir
Thanks a lot Sir
thank you
Anyone is here before the finals? 😂
BTW ais school grade 11
laith ya 7aywan
2ethyl,5 propyl ,1,3 dioxane structure
Is it still necessary to put 1 before pentanol?
Yes because without it you don’t know if it’s 1-pentanol, 2-pentanol or 3-pentanol
@@rwayle but our proff said that its okay if you don't mention the 1st position. Its understandable isn't?
@@abial7138
Yes , it is .
Our prof. Said that too.
I don't think its a problem as if someone just says 'pentanol' they usually mean 1 pentanol
Interesting
Real life super man
Thanks 👍
الله يهديك للاسلام لو كنت كافر ويدخلك الجنة لو كنت مسلم
What if there's more than one OH ?
Then it’s a diol or triol etc.
حبيبي شكرا
Gracias
Thanks a lot
Thanks
Thank you🤍
pozdrawiam z Polski
King!!!!!
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Why is it cyclohexanol?
Because it's a cyclohexane ring with an alcohol group. cyclohexan ol
What a god.
How to write carbinol names
What Is Oh Cl Oh?
wait wait wait... that can't be 2-methyl-2-pentanol ? i started counting the carbon where OH is connected
oh wait nvm. i think you cant count it that way lol
Thank you😊