Identifying Intermolecular Forces - Real Chemistry
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- Опубликовано: 15 сен 2024
- In this video you will learn how to determine what intermolecular forces act between different molecules. We will introduce 1) Dispersion forces - forces all molecules possess due to temporary dipoles 2) Dipole forces - forces molecules posses if polar and 3) Hydrogen bonding - A sort of super dipole that results from hydrogen being bonded directly to N, O or F. We will then compare the strengths of these intermolecular forces and discuss how they relate to boiling point.
To understand how we know when a molecule is polar, please watch this video: • How to tell if a molec...
You just taught me my entire unit of chem in 10 minutes god bless you.
i love that you went through problems! most people just explain the forces but don’t show us how to apply that to actual problems so this really helped! you teach better than my prof!
A real help for my online classes. Thanks so much! I will recommend you to my friends.
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This made so much sense to me! Thank you for this helpful video.
omg I watched khan academy and many more. This video was by far the most helpful! thank you
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I literally have my end of topic test tomorrow and you resolved all my doubts. THANK YOU
Thank you SO much. You explained this so perfectly and I loved how you used examples which made me understand more. Life saver!
This is so helpful!! Going through questions really made me understand
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This helped me to know the differences in all 3! Thank you! 😊
Glad it was helpful!
Thank you for making this very helpful video! It really helped me studying for my chem exam :)
This is the best video ever! Im gona teach this method to my students! Thankyou so much.
I now know how to determine inter-molecular forces. Great video, very cool!
This helped a lot in preparation for my midterm quiz! Thank you very much and keep up the great work sir😁
Thank you very much for this very informative video. Well appreciated.
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U taught me what my tutor couldn't
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I'm so glad!
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Awesome video. You do sound like Seth Rogen though. (That is a compliment)
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The chemistry goat
Thanks! This helped so much
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very helpful .
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Great video!
great video but that is not steam above the water. It is condensed water vapor.
u the goat man
thank u so much!
Thank you for your help!!
thank you this helped me a lot! :)
thanks man you are the goat
thank you for the great video. quick ? tho.. for the first problem in the practice problems, i came to the conclusion that there should be H-bonding. My reasoning is that since its intermolecular forces (between molecules) there would be another molecule with a partially negative N and it would want to bond with the H (partial positive) and that would then be a H-bond. is this correct?
Hey Amir,
You are 100% correct that the nitrogen will be a little negative and hydrogens ever so slightly positive. To have hydrogen bonds, you need to the larger partial charges that come when a hydrogen is covalently bonding to O, N or F. Then you get a relatively large partial negative/positive and the strongest IMF - hydrogen bonding.
Basically, since H isn't bonded to N through a covalent bond, there is no hydrogen bonding in this molecular.
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Great Video!!
If in the last exercise we had ionic compounds those would have the greatest BP, rigth?
SO GOOD!
Thank you!
What is ion-dipole force?
Hi Megane,
The ion-dipole force occurs in mixtures of ionic compounds and polar compounds. This force is stronger than any discussed in the video. Good question!
really help me a loooooot!
For hydrogen bonding does a N,F, or C have to be bonded directly to the hydrogen atom
Correct. So a molecule with a structure of O=C-H would not have hydrogen bonds, where C-O-H would.
@@RealChemistryVideos ok thanks
If hydrogen bonding occurs in only F,O and N then what about C2H5OH(ethanol)
Ethanol has hydrogen bonding since the OH at the end represents an H directly bonded to an O.
Please what software did you use in making this video?
I make a presentation on powerpoint and use a template that has a blue square in the top right (where a video of me teaching is eventually placed). Then I use an ipad with Doceri to scroll through and annotate the slides. Doceri also lets you capture all of this annotations and audio. While I annotate my slides I am also recording a video on a camera and (when I am not lazy) a separate audio file from a nicer microphone. I put all of these video/audio sources together with sony movie maker.
Happy to share more if you have more questions.
anybody else think he kind of sounds like Seth Rogen? haha love it though
isnt ion-ion stronger than hydrogen bonding 4:00
I'm pretty sure
Wdym? All of these are ion to ion bonds, intermolecular forces are just three categories created to group said forces by relative strength.
I might just be misinterpreting what you’re trying to say though.
Or I could be wrong.
Probably the ladder lmao.
by ion-ion forces, do you mean the forces present in an ionic bond between say a cation and anion? These are certainly stronger but are considered intrAmolecular forces. Because they are within a single ionic molecule.
There is a force stronger than any of what we discussed here that occurs in mixtures, those forces are called ion-dipole forces. This occurs whenever there is a mixture of ionic compounds and a polar compound ( like salt water).
I hope that helps!
Eister ong zhi xin
Thank you so much !!!
Great video!
Thank you!!