I've now known the effect of phenolphthalein for 10 years and never heard of that mechanism before. THIS IS SO COOL! :D

This was the best explanation i have ever seen i my life!

wow this was a great video... Even i as a high schooler with only basic knowlegde get it now

Omg thank you so much DX I finally understood this topic

this helped so much, thank you!

wonderful explanation thank you!

VERY VERY NICE VIDEO..THANKS A LOT

THIS IS EXPLAINED SO WELL OH MY GOD WHY CAN'T YOU BE MY CHEM TEACHER

really liked these transitions. no homo

Great explanation, great teacher!

I love you.. You always help me a lot.. 😭😭

thanks for the help! (y)

Thanks for the explanation

good video, but i dont get which of the videos about this topic is the first one i should watch!!!!

Why is the reduced form of DCPIP colorless but the DCPIP blue?

Wowwww✌️

thanks so much

Why does the energy difference between the HOMO and LUMO decrease though? (other than that you've drawn them closer together)

@anitalayal9171

2 жыл бұрын

I want answer of this one ,,,I have same doubt ✌️

The volume is very low

Wait why are we focusing on only the pi bonds? Why not sigma bonds?

Sir app kis app se videos bnte ho

What if you re-acidify the phenolphalein. How would it go back to its original structure? Wouldn't you get an alcohol on the O- and end up with a carboxylic acid on the COO-? Then it would still be pink.

@Jo24Park

7 жыл бұрын

basically possible and it will also happen. But only in equilibrium with the formation of H2O. Remember that this is an effect in the absence of H ions. So either H2O or OH/COOH but not both simultaneously. And I'd guess that because OH- ions are just smaller they get H+ more easily than the sterically hindered phenolphthalein.

why is the energy difference smaller ?

Ok, So i understand the concept of absorbing a specific wavelength of light, but hwo do we get it reflecting a different wavelength? Is there another formula that dictates what wavelength is emitted from a molecule based on what that molecule absorbs? Thanks!

@Nicolas-eo7lo

5 жыл бұрын

This might be a bit late, but as far as i understood it: If a material is lets say red, then every wavelength is absorbed by this material, EXCEPT red/reddish wavelengths which are reflected into your eye. Can anyone verify this?

@ghostsniiper1

5 жыл бұрын

@@Nicolas-eo7lo Not quite, lets see a molecule absorbs red wavelength of light. The light reflected will be the complementary colour according to the colour wheel, in the case of red light being absorbed the complementary colour is green and so the compound wil be green coloured. Hope this helps

When a compound is subjected to electromagnetic radiation why cant it absorbs all radiations like microwave , ir, and uv and emits light in visible region?

Sound is very feeble in this video.

When you say, "sp3 has no p-orbital, and sp2 has a p-orbital" Do you mean sp3 has no pi bonds and sp2 has one pi bond? I thought sp3 has 3 p-orbitals and sp2 has 2 p-orbitals. Did you mean to say pi bond instead of p-orbital?

@LUICT15

8 жыл бұрын

+danielle lebouthillier i think what he meant was that sp3 does not have any unhybridized p atomic orbitals to form pi bonds while sp2 has 1 unhybridized p orbital and can form a pi bond

@manzoorahmeds7567

8 жыл бұрын

hi

can anyone tell me how spectroscopy is used in real life? I don't get this subject :(

@km-sc4kz

4 жыл бұрын

Spectroscopy is used to identify molecules by looking at their absorption spectra.

0:03 wrong. wtf r you talking about?