Drawing Constitutional Isomers of Alkanes - Organic Chemistry

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[@niffniffhooray]

I've made this mistake so I wanted to clarify for those looking--adding an ethyl group tends to change the chain. For instance hexane. Adding an ethyl group to the a 3-carbon chain just creates a 4-carbon chain with two methyl groups. It looks different at first glance, but you always want to make sure to recount the longest chain. That being said, for heptane there are nine structural isomers.

[@EvillAnime]

yep always remember to stop for a few seconds to make sure you're cooking right

[@afaandewa2693]

You are awesome.... Helping a lot i don't know how to express it but all i can say you is u r love man ❤️❤️❤️

[@promiseoromidayo5293]

You are the best, you just made me understand this topic🙂

[@niki-mendozacatalan5903]

in 4:16 should it be named 2,2-dimethylpropane?

[@SelfMadeHundredaire]

He did say "2,2-dimethylpropane" but miswrote the name as ~pentane. Good catch though. I was thinking the same thing.

[@wokkes890]

yea i saw it too

[@adamguerrero5293]

Just caught it as well!

[@OvadiaBabakhanov]

Yeah caught it too

[@IsabellaAmethyst]

At 4:17 you wrote 2,2-dimethylpentane. Why is it pentane and not propane? You marked 3 carbons on your parent chain

[@MasterAssassino1]

Minor error...you are correct. 2,2-dimethylpropane would be the correct name

[@ObaidRazi]

If you notice, he said propane but wrote pentane

[@itshannahnaturals7621]

you are right. there's a small error.

[@samawatahsan]

Heptane has 9 isomers , i think you missed 3 carbon with 2 carbons having 2 carbon branch each , correct me if I'm wrong

[@jagger247]

Xerox yh 9 isomers

[@eyokient4341]

Yaaa ur right

[@sillybilly297]

bruh this guy probably eats carbon atoms.....amazing video.

[@krishkain5083]

sillybilly297 hello

[@krishkain5083]

Hey silly billy make sure u eat ur goat meat and ur roti

[@krishkain5083]

Only then u will become molish molish cool guy

[@NoGameNoLifeBlank]

@@krishkain5083 what weed are you smoking?

[@judahsharonb270]

Food is made up of carbon atoms. Therefore, everyone eats carbon atoms. XD

[@haidaralqadim2399]

you are missing 3-ethylpentane, the 9th isomer of heptane

[@eyokient4341]

You are wrong heptane have 9 isomers but you only write 8 of them, but i admire your work that in great.

[@harleyquiinnnn]

7:20 For heptane isnt there the possibility of forming 3- ethylpeptane? Having a five carbon chain with ethyl on the third carbon

[@amitojsinghgrover2494]

But then the main chain will change and hence we will get the same name

[@jikarumiromoto5911]

is there a general formula to identify the total number of constitutional isomers?

[@bayanabdullah7562]

I think this formula it’s work (2^n-4 +1)n:means the number of carbon

[@jikarumiromoto5911]

@@bayanabdullah7562 thanks but this formula fails at C8 and higher.

[@EvillAnime]

I would assume that it'd be so complex that there would be no point in learning it

[@siyanastoyanova1294]

Really helpful!! Thank you :-)

[@ramamwero7398]

The third constitutional isomer of C5H12 is 2,2-dimethyl propane,not 2,2- dimethyl pentane as you have illustrated......nice presentation though

[@vrinda5700]

Can't we add an ethyl isomer in heptane (3-ethylpentane)?

[@amitojsinghgrover2494]

But then the main chain will change and hence we will get the same name

[@EvillAnime]

@@amitojsinghgrover2494idk about the name, but that chain isn't shown in the video and it should be possible as a functional isomer
also it would be 3-ethylpentane because you always choose the longest chain and in this case it's 5

[@jagger247]

heptane has 9 isomers not 8

[@linouchka2168]

thank you so much

[@paranthamanv5609]

Heptane forms 9 and octane forms 18 isomers

[@vinr1187]

At 5.32 can we put one group on the top and the other group at the bottom ? rather than two groups on the top ?

[@JohnCena-nh5eg]

are cyclo alkanes consitutional isomer?

[@rubenmontes_]

How come there were any ethyl groups when trying to find the isomers?

[@GoodNewsForStrangers]

This is amazing thanks mate

[@Pooka6231]

How would you name the 4-carbon isomer for heptane? The C7H16 molecule? I've named the rest for this one...

[@greekfire7980]

2,2 Dimethyl-3MethylButane.

[@GoodNewsForStrangers]

What about 3 -ethylpentane for c7h16?

[@daily5minvlogs211]

7:25 what about 3-ethylpentane???

[@tamimrahman9749]

Th ank you very much.

[@addithehun4044]

when i get my chem degree and make meth- i shall give u some of my millions

[@user-ri8ps6cl4w]

4:19 you meant 2,2dimethylpropane

[@user-ri8ps6cl4w]

this video is extremely usefull but i think you were not prepared, huge thanks any ways

[@kaylahrae.]

i thought nomenclature cannot be the same

[@hossam_mohamed00]

4:04 are this 2,2-methyl propane or 2,2-methyl pentane

[@ChemSimplified]

Hosam Mohamed It's 2,2-dimethylpropane

[@Rose-zg9pu]

4:06 isn't it called 2,2-dimethylpropane?

[@wildgamerbeast6408]

It is. Bro mad a mistake

[@kingshorts8442]

daddy

[@osamaalqnas9138]

Can you speak arbic please

[@ninomaeputanginanis-kfp]

Osama Alqnas so singong mag-aadjust?

[@ewwxaca]

Thank you so much