This has been EXTREMELY useful to enhance my understanding. Hats down.
@MaChemGuy
3 жыл бұрын
Really great to hear. Thanks for getting in touch :)
@a.human.
5 жыл бұрын
YOU DESERVE A MILLION SUBSCRIBERS.
@chelizicheesecake
4 жыл бұрын
Impressive, comprehensive and detailed video. These teaching and learning resources will greatly benefit both teachers and students alike.
@MaChemGuy
4 жыл бұрын
chelizicheesecake Very kind of you to say so. Thanks 🙏🏻
@halimapatel6295
6 жыл бұрын
This channel is an absolute life saver. The only reason I’m going to get a decent grade in my exams
@AdityaCasio
10 жыл бұрын
Thanks, this helped me to understand the difference between reflux and distillation!!
@pricilasalema5897
5 ай бұрын
I don't normally comment on any chemistry videos, but this one, by far has to be the best organic vid explanation I've ever seen!!
@sayefrahman6152
9 жыл бұрын
absolutely fantastic video. My school does not have the equipment to carry out this experiment but everything makes more sense now. Keep the videos coming!
@ruthkeane5471
10 жыл бұрын
fantastic video- this makes so much more sense now- thanks!!
@fathias9606
9 жыл бұрын
Thank you for helping my understand the difference between reflux and distallation
@macbookpro8014
7 жыл бұрын
I watch all of your videos, they're so helpful and clear. Please make more videos, you make chemistry make sense.
@MaChemGuy
7 жыл бұрын
That's the plan. Glad you like them :)
@macbookpro8014
7 жыл бұрын
Could you please do back titration examples as I don't fully understand it yet? Thank you very much!
@edwardritchie53
10 жыл бұрын
I appreciate all the videos you have posted , thank you so much you're a great teacher
@MaChemGuy
10 жыл бұрын
Well thank you!
@freddyflores5387
Жыл бұрын
@@MaChemGuy it
@kylomeg
9 жыл бұрын
So grateful you've uploaded these! Really great explanations, thank you!
@patrickbateman6080
4 ай бұрын
Absolute king. My chem teacher taught me nothing !!!!
@lara-yc6iq
3 жыл бұрын
I have a huge test tomorrow on redox, energetics and organics and this helped me so much!
@juanthomasmendozaguidera8176
7 жыл бұрын
omg my teacher tried to explain this in class and we even carried out the experiment but it was shit. Thanks a lot for this video now I understand everything much better...
@MaChemGuy
7 жыл бұрын
Juan Thomas Mendoza Guidera Glad you liked it. To be fair to your teacher, it was just me doing the experiment:)
@MaChemGuy
7 жыл бұрын
Juan Thomas Mendoza Guidera Glad you liked it. To be fair to your teacher, it was just me doing the experiment:)
@jamesretreat
8 жыл бұрын
these videos are so good . i. cant. even.
@MaChemGuy
8 жыл бұрын
Finish the sentence??? :)
@jamesretreat
8 жыл бұрын
"I can't even" = "I'm speechless". Internet slang sir :)
@MaChemGuy
8 жыл бұрын
+Pnuema Morosa Haha! My daughter is rolling her eyes at me :)
@varsharavi5602
9 жыл бұрын
Brilliant teacher! Thank you very much!
@MaChemGuy
9 жыл бұрын
Varsha Ravi That's very kind of you to say so. You're welcome :)
@varsharavi5602
9 жыл бұрын
Would you be able to do an exam techniques video for AS chemistry? I've got my first paper in two weeks😕
@ummewaseem5983
8 жыл бұрын
+Varsha Ravi ik man he's even better than Dr Noble
@MaChemGuy
8 жыл бұрын
I'm hoping that's a good thing!
@spacexfanatic9155
4 ай бұрын
best O chem vid on youtube gang
@assemubigaliyeva5872
5 жыл бұрын
Hi, omg a huge thanks to you! You eased the whole concept of reflux and distillation processes for me.
@MaChemGuy
5 жыл бұрын
Acee Glob Great to hear. Very happy to help
@assemubigaliyeva5872
5 жыл бұрын
@@MaChemGuy hi again, wow I had a mock today and I got a question based on reflux, couldn't be more grateful, thanks!
@MaChemGuy
5 жыл бұрын
Acee Glob You just made my night. Thanks!!
@sujata8957
3 жыл бұрын
The best chemistry resource out there!
@peterkebangeu8451
6 жыл бұрын
Thnk you best till now very clear and calm i like that thnk you
@BoXy-crabs
Жыл бұрын
i love this explanation and visualisation soooooo much. thank you :)))))
@spacexfanatic9155
4 ай бұрын
amazing
@karanjotsahota2067
8 жыл бұрын
Thank you very much, I really appreciate this helpful video as I am going to carry this practical out soon :D
@jhyland87
4 жыл бұрын
Great video!
@MSJChem
7 жыл бұрын
Nice video, thanks.
@archjanasivasuthan6252
4 жыл бұрын
Hi sir. Thank you for this video. If water is formed as well when we react the oxidising agent with he alcohol, why isn't it condensed out first? Thank you.
@atharvpundpal8534
10 ай бұрын
Hello. I would like to oxidise ethanol to obtain ethanal. I am able to set up the condenser. Could you please tell me the concentrations of the alcohol, the oxidising agent, and the acid you used to acidify the oxidising agent in order to obtain the aldehyde?
@mohfa1806
2 жыл бұрын
Thank you sir for your great educational videos...i have a question please : in both techniques why aldehydes are the only ones that are evaporating ? , why alcohols are not evaporating also under heat?...thank you again
@michellethompson7539
Жыл бұрын
I have to do this practical with my class. Which alcohol did you use for the oxidation? I'm guessing not ethanol as the ethanal boils at 20C. I was wondering what you used - propan-1-ol? Thanks
@Laura-wp6eh
8 жыл бұрын
How would you be able to get pure carboxylic acid out of the reaction mixture with the dichromate ions? Would you be able to use a separating funnel, recrystallisation or something? Thanks so much for all of these videos, I'm sure they will be used by chemistry students for generations. :D
@saadpatel2734
5 жыл бұрын
Use water bath,...they are flammable and could cause fire on a naked flame
@charlotteclarke2301
Жыл бұрын
So, when you oxidise a primary alcohol with [O] under reflux, you produce an aldehyde, and oxidising this aldehyde in a distillation position produces a carboxylic acid? But if we oxidise a primary alcohol under just reflux we produce an aldehyde and if we oxidise a primary alcohol under distillation we still get an aldehyde, so for a primary alcohol we must reflux and distillate to form carboxylic acid, and in secondary alcohols we can either reflux or carry out distillation because we will always form a ketone? (Sorry, just making sure I understood correctly :) )
@MaChemGuy
Жыл бұрын
You’ve got it the wrong way around for primary. Reflux gives the aldehyde then the carboxylic acid Distillation only gives the aldehyde
@barelyhuman8391
5 жыл бұрын
Sorry for my stupid question in advance but I am very new to all this and would like to be as safe as possible before trying anything my question being would it be safer to use a electric heating mantle or hot plate to heat the solvent in place of the open flame ? No disrespect intended just making sure before hand thanks in advance
@MaChemGuy
5 жыл бұрын
barely human Definitely, it’s just we only have one of each
@barelyhuman8391
5 жыл бұрын
Ok thanks for responding so quickly I'm trying to get all my safety stuff down to make my family worry less about Me accidently blowing something up or what not again thanks and I'll watch more of you're vids when I get a chance ✌
@R1U2T3H4I5E6
9 жыл бұрын
and is water only produced in the first oxidation of primary alcohols?
@IBoudiaf
6 жыл бұрын
Yes, for Primary alcohols(1°) water is only produce in the first oxidation For 2° alcohols water is also produced I know this a 3yr late reply but for the future people who need clarification, there you go
@pamelabai2097
5 жыл бұрын
I was just wondering when you are heating by reflux, how do you know if the reaction has gone to completion or how do you know how much of the carboxylic acid is present?
@drbravo5072
3 жыл бұрын
Chemists monitor reactions by doing a TLC (thin layer chromatography). You learn this in year 2. You will also use TLC to analyse the purity of aspirin (if you this experiment in you college).
@PaulSt-Germain-c7u
5 жыл бұрын
Nice video, great explanation. Can I use same system (distillation) for oxidation of methanol to methanal?
@gatshi4
2 жыл бұрын
During the distillation process, why it is more efficient for the water to go from the bottom to the top? isn't it is just the same?
@MaChemGuy
2 жыл бұрын
If you fill from bottom you’re filling under gravity and the condenser will fully fill with water. If fill from top it doesn’t as you get air bubbles
@oswin4715
6 жыл бұрын
Is this a Pag for Ocr A??
@na-chan163
4 жыл бұрын
I'm curious. Dichromate oxidizes primary alcohol all the way to carboxylic acid, right? how then can we get aldehyde from the process?
@MaChemGuy
4 жыл бұрын
It's a stepwise process. Aldehyde produced first so if removed from reaction vessel it can be isolated. This is achieved by using distillation rather than reflux.
@lukeb6341
4 жыл бұрын
Why is it better that the cool water moves up the condenser in the distillation set up?
@MaChemGuy
4 жыл бұрын
Luke B It doesn’t fill fully up if water enters from the top. Often get air pockets
@julst129
5 жыл бұрын
How can I determine when the reaction has fully finished?
@MaChemGuy
5 жыл бұрын
julst129 Suppose you could take a sample from the flask and run an IR spectrum to check all the alcohol has gone.
@julst129
5 жыл бұрын
@@MaChemGuy that could be effective thanks. How about measuring the rate of the reaction whilst completing the experiment? Could I determine this by measuring the time taken for the experiment to reach a certain amount of product formed?
@xOxAdnanxOx
4 жыл бұрын
how can I tell when all the reactant has reacted in reflux rxn method? Thank you
@MaChemGuy
4 жыл бұрын
You'd have to analyse the contents of the flask (IR/NMR/Chromatography) to determine what is present. There is no visible sign I'm afraid
@xOxAdnanxOx
4 жыл бұрын
MaChemGuy haha thanks a lot, actually u made me excited about IR, NMR!
@mikamalach2510
4 жыл бұрын
The explanation of distillation and reflux is very well done but what about safety? Like no gloves, no lab coat, open fire while working with highly volatile substance with a low flash point, no boiling chips, no fume hood (I mean, the vapors can be irritating)... I know that no vapor should be able to escape out of the system but still one never knows as the procedures can never be 100% perfect. This is just not OK...
@jonross377
3 жыл бұрын
Could this method be used to get formaldehyde from methanol?
@TheFrazerboy
9 жыл бұрын
why do you have to heat gently when distilling if the vapor produced is immediately distilled and collected forming an formaldehyde?
@nadiyahghafoor3284
6 жыл бұрын
thank you so so so much for this you are an absolute GOD SEND i finally understand this THANK YOU SO MUCH !!!!!
@jade728
6 жыл бұрын
nadiyah ghafoor hello dad
@R1U2T3H4I5E6
9 жыл бұрын
is it called oxidation because the alcohols lose electrons or because they gain oxygen?
@Wanted4PwnRS
9 жыл бұрын
Remember OIL RIG, Oxidation Is Loss (of electrons) Reduction Is Gain (of electrons). So the alcohols lose electrons.
@christianmolla379
4 жыл бұрын
#CORONA GOT ME DOING A-LEVEL CHEM IN MY BLANKET
@natsukibarususubaru
Жыл бұрын
Fuck a double profit, triple that and go get it off it If they want it, I might stock it, can't see them now, I just block it Use a pocket, fuck a wallet, pocket watching, pic, I crop it In Orlando, top, I drop it, drop, I cop it, I should stop it I won't make it, might Steve Jobs it In the mall, tags, poppin' Blood is drippin' on me, fallin' Song recall it, now it's never droppin' Treat you like my brother, or my cousin, but you're undercover Treat it like it's nothin', 'cause it wasn't, and it really wasn't Might sleep in a coffin, but I wake up, might be drinking coffee Get these people off me, get you off me, leave it like a crime scene You might find a copy, but there's no one that can do it like me Do it like me, do it like me Misery loves company, so you should come hang with me So come and hang with me, you should come hang with me Soon I'll be like you, you see, I take the form I need (I take the form I need) Trash on me, cost ten at least, don't speak, I sip my tea (I sip my tea) Suddenly it came to me, came to me in a dream You can't do it like me, do it like me Can't do it like me, do it like me Can't do it like me Can't do it like me, do it like me Misery loves company, so come and hang with me
@spacexfanatic9155
4 ай бұрын
gyatttt
@skiphoffenflaven8004
Ай бұрын
No flames in organic chem laboratories. Most organic solvents are volatile and flammable. Yikes.
@MaChemGuy
Ай бұрын
It’s a school
@fearlessbaek1583
5 жыл бұрын
Omg I always thought [o] was oxygen so was confused how distillation got oxygen to react
@FullModernAlchemist
4 жыл бұрын
The oxygen cones from the orange potassium dichromate. chem.libretexts.org/Bookshelves/Organic_Chemistry/Supplemental_Modules_(Organic_Chemistry)/Alcohols/Reactivity_of_Alcohols/The_Oxidation_of_Alcohols
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