Alkanes - Free Radical Substitution

[Stephlarr]

thank you so much :) couldn't have made it much clearer - feeling much more confident for my exams tomorrow!

[aiman1290]

its owsommmmmmmmmmmmmmmmmmmmmm

[VoldyRoss]

SWEEEET!! I finally understand! 2 hours until my final chemistry exam you just saved my butt great vid :-D

[MrSuperJeronimo]

isn't there a free radical on the Cl in the 2nd propagation step?

[moorbre]

Thanks alot that was very clear and well done :D:D:D

[kwokthechemteacher]

@moorbre: Your welcome. I am glad that it helped. :)

[ah4fecksake]

fantastic.....exams next week. feel v confident now. 

[kwokthechemteacher]

@ah4fecksake Glad that it helped! :)

[booboobaybaymama]

thank youuuu i revised it my self and still couldnt understand it myself until now thank youuu it pretty simple now

[fintaneh]

That really clear, brilliant to see it in simple steps. Thanks very much, helped a lot!

[kwokthechemteacher]

@fintaneh I am glad that it helped. :)

[bindaasmahesh]

thanks man my exams r comming near and it helped me a lot ,, cheers buddy

[kwokthechemteacher]

@bindaasmahesh I am glad that it helped! :)

[gamerohan]

Can i guess that you're from sinagpore?

[kwokthechemteacher]

@gamerohan Well.. it is in my introduction. :P

[gamerohan]

@kwokthechemteacher Ah right, didn't see that, but i guessed from your accent! But this really helped with my chem exam yesterday! Oh and one question, how does Fe3+ bond with CN-? 

[kwokthechemteacher]

@gamerohan Well, that is okay. What is the context of the question? If it is a compound with the formula Fe(CN)2 = ionic, if it is a compound with a formula [Fe(CN)6]4-, covalent (dative bond).

[gamerohan]

@kwokthechemteacher Well the question was something like...what is the name of the complex ion when with Fe3+ and the Ligand CN-, and predict its shape

[kwokthechemteacher]

@gamerohan then it is a dative bond. Are you J1 or J2? Which sch?

[kwokthechemteacher]

@gamerohan. haha yup.. it is in my introduction.

[ohyahers]

AMAZING! finally understood it! thank god for your video!

[kwokthechemteacher]

@ohyahers I am glad that it was helpful to you. :)

[beyblader10171]

amazing explanation, this is all i need !!

[MrSrujan007]

Nice Video.........Very Helpful

[zezo7hdk]

this was really helpful THANKS ALOT!!

the mechanisim u explained really helped me understanding the "Chain Reaction" as we'r taking it.

[Im408Princess]

For the chain propagation 2nd sub step: Where does the Cl2 come from?

[anu51000]

a great explanation..helped a lot thanks

[taintedsoul888]

Ronery, so ronery, ronery and sad and awone...

[prandtl002]

Too sluggish dude, not bad though!

[jeeundo]

where did the carbon come from?

[JoeGaynerMusic]

Excellent - The AQA Specification textbook used in the UK doesn't describe the exact mechanism of reaction and merely states it!

[kwokthechemteacher]

Thanks.. I hoe it was useful.

[timetrialtom]

@JoeGaynerMusic Yeah same! AQA book sucks, its doesnt have answers for exam style questions, doesnt explain things clearly and just generally bad!

[1091Floyd21]

How does the fact that the relatively large size of the bromine atom allow the formation of a 3 membered ring structure in the carbonion ion?

[leopoldfoto]

See the propagattion step, step 2.

There the chlorine radical missis an electron.

The arrows in your explanation are not very clear.

[semoscuk]

thanx really helpfull video :)

[haloapa]

You sounds like you are from Singapore

[rezaeijavan]

thanks , but i gueess you really need to buy a new microphone

[hasan111111111111111]

thanks it was really helpfull

[kwokthechemteacher]

@hasan111111111111111

Thanks for the comment. I am glad it was helpful. Hope that the others will be useful too. :)

[Zeahxxx]

Thanx for explaining..it has been of much help:)

[kwokthechemteacher]

your welcome. Glad that it was helpful. :)

[adomav]

thank you for this video, studying for a test on friday and this really helped clear this up

[kwokthechemteacher]

I am glad that it was of some help. Thanks! :)

[youngc1987]

I am taking Advanced Organic chemistry right now and I a ma senior in college. I must say, going over the basics again can be a little crazy after you haven't had organic in a while. But your video was great for free radical substitution. Hopefully you have a lot more from where that came from Thanks for this man and keep up the good work.

[kwokthechemteacher]

Hi, thanks! Glad that it was helpful. Yes, organic can become rusty when we haven't looked into its reactions.

[kwokthechemteacher]

yup! you are right that 2,3 dimethylbutane will be the bypdt. that is because the removal of the 2nd H of propane produces a radical that is more stable. Hence, this results in 2-bromopropane to be formed.

[denzelnolet]

Thanks for the video, it supplemented my readings well. Keep it up.

[kwokthechemteacher]

@denzelnolet

Hi there! Glad that this helps! :)

[LOL2345432]

Thanks a lot, I am doing an assignment for chem where we have to learn our reaction. I was given propane + Br2, would I still follow these steps and could the last step for it be C3H7C3H7?

[kwokthechemteacher]

yes the last step cld be C6H14, the formation of hexane. :) but that usually wld be the byproduct.

[LOL2345432]

Thanks a lot, so one of the questions i have to answer is what are the uses of the product and the reaction itself. Would i use the product of C3H7Br and the reaction: C3H7 + Br --> C3H7Br?

[kwokthechemteacher]

@LOL2345432

if you are trying to produce C3H7Br, then it will be reacting C3H8 with Br2. During the propagation C3H7 radical reacts with a Br2 molecule to give the C3H7Br. In addition, yes the termination step will also have C3H7 radical reacting with a Br radical to give C3H7Br.

[LOL2345432]

Ohhh i understand, thanks a lot for your great help!

[richard93goodman]

were does the CH3 molecule come from?

[kwokthechemteacher]

It comes from the reaction between the halogen radical and the alkyl molecule.

[littelrobinho]

Excellent video.

Very usefull

[kwokthechemteacher]

thanks.. glad that found it useful. :)

[lovelylatina207]

great video

[kwokthechemteacher]

thanks!

[xhappyberryx]

thanks for the vid! very helpful indeed

[kwokthechemteacher]

@xhappyberryx

glad you found it useful. :)

[Yohannesiscool]

Thank you so much. You can not make it any better. Very helpful. :)

[kwokthechemteacher]

Your welcome. Glad that it was helpful. :)

[naiieem]

Very clear and very good!

btw if you want to make the video widescreen add the tag yt:stretch=16:9

[khalid95151]

i really appreciate the way you hav choosen to make ur students understand thanks alt

[khalid95151]

what does homolytic fashion and fission means sorry to say but your words are tooo complicated to understand them and my chem teacher taught us in a bit differnt style there are many steps you dint show its ok but u hav done a good job!!! thanks alt

[naiieem]

When one electron goes to each chlorine atom, it's evenly shared so it's 1 electron each not 2 electrons for 1 atom and the other get's non.

[innesleeds]

very good and very clear working :) exams tomorrow and this has helped me to cement my knowledge of the mechanism, thanks

[kwokthechemteacher]

Thank you! =) I am glad you find it useful.

[RocknRoll1971]

pretty clear`n useful

[kwokthechemteacher]

Thank you! =)