Cis-trans isomerism | Alkenes and Alkynes | Organic chemistry | Khan Academy

[@SaucyNight]

I have had this explained to me before but i can say with certainty that this video is most responsible for making this a concrete idea in my head, THANK YOU!

[@sandrozernicki]

In the minute 3:50 the last alkene is not appropriate to use Cis-trans connotation. It is (E) because when you have different groups, we use the pre log ing connotation and is more appropriate for this example.

[@anaseshmela8512]

Yes, I'm confused about that one. Isn't the propyl group is stronger than the ethyl, and the other ethyl is indeed stronger than the methyl. But it seems he's only considering cis to be 2 identical groups on same side.

[@agilfadilah5007]

Couldn't agree more. It is better to use E-Z system.🤔

[@Morrowindur]

Thank you a lot!!! I got an A because of this video- thank you a bunch!!

[@ibrahimmahfouz5710]

i feel like a boss after this video hhhhhhhhh

[@ryanagar1114]

Did you just assume this chemicals formula?

[@hinaziqbal8116]

You guys have the best videos out there. Perfect and on point.

[@reemq4646]

thank you .. this video is really help me 👏👏👍😙

[@m.r.d4550]

very simple! thank you so much

[@_tatusha244]

Great presentation! Thanks a lot :)

[@hamps9285]

0:29 it’s but 2 ene

[@Camerz]

both are correct.

[@emsci]

2-butene is old iupac pre-revision whilst but-2-ene is post revision

[@sardemari]

Nice, I think I got it now ! Thank you

[@irgd]

That’s was so helpful! Thank you Dr 💕

[@TerronysaurusRex]

You make chemistry So amazing

[@Julyy-wf9vn]

Thank you 💗✨

[@SHocKW4vE949]

thanks man!

[@utkarshmishra4082]

0:40 I think it will be but-2-ene

[@mk-uv5lk]

Doesn’t matter either one works

[@grandtheo]

I feel like a chemist after this vid

[@ivanduy5275]

+Theo Tidiane I don't think so .

[@mila8252]

lol Ikr!

[@PonzooonTheGreat]

So how come if we have a Cl and Br on one side of the DB and and H and Cl on the other side it is called Z??

[@muhammedali6941]

Wouldnt the first compound be but-2-ene?

[@bad8592]

its the same

[@hamps9285]

Bad no it’s not, number before word root is used for prefix not for suffix

[@IndianSchoolOfBiology]

How do u know if it's ethyl or methyl?

[@lukeshsundar]

Methyl has only one carbon and three hydrogens, whereas ethyl has two carbons and five hydrogens. Meth means one. Eth means two.

[@sudarsan.r5985]

vera leval

[@rjames76]

Cis and trans sounds like SJW talk lol

[@ED1THMAX]

nic

[@7modXx]

did you just assume the butene's gender?!

[@Captain_JackSparrow..]

Any Indians

[@shafikabdulkarim8442]

[@tonyisgonetomorrow]

talk quieter, this video is way too loud

[@lucasm4299]

tonyisgonetomorrow Lower your volume