In this video is shown how to perform a fehling's test and how to prepare fehling's solution. As an example different sugars are tested. Patreon: / randomexperimentsinter...
Пікірлер: 82
@abhayanand95852 жыл бұрын
Wonderful Demonstration as well as explanation!
@sanatani76607 жыл бұрын
super cool video! the part about water bath was helpful. And also I didn't know about the toxicity of cuso4. Thank-you!
@EtherealRoninERProductions3 жыл бұрын
If you want to remind yourself of this easily, think of that among us task where you test 4 or 5 test tubes and they are all blue, when you check back on it one of them turns brick red, I never knew that was added in that game until when I first learnt about this
@averageanon0073 жыл бұрын
how do you remember the among us task
@werallgnnadieintheend2 жыл бұрын
oooh yeaaah🤓😯🤗
@xx-zp4or2 жыл бұрын
@@averageanon007 He is an Among us kid
@Uma_Vlogz Жыл бұрын
I could never complete that task actually
@MehvishFatema0266 ай бұрын
Thank you so much This made easier to understand the test
@sankalpyadav29262 жыл бұрын
Thank you sir You made life easy
@jovanakostencova18134 жыл бұрын
Im doing this at the science month on 23 of november Its proving glucose in honey and i need to explain everything that happeneds and why..the expiriment is a bit short so i wanted to see a video explanation so that i know more things that i can say there.Didnt see more than i knew but thanks!
@osabnis7 жыл бұрын
Very good explanation
@belenghohn70935 жыл бұрын
great quality video
@jomo34803 жыл бұрын
Great video
@sintayehukochito9035 жыл бұрын
An excellent explanation.
@himadribiswas8523 жыл бұрын
Nice explaination
@nithinthogiti6289 Жыл бұрын
Lots of information bro
@geetikasingh39367 жыл бұрын
Good explanation and really helpful
@niyatiaghera4871 Жыл бұрын
thank you
@sukhendumukhopadhyay42196 жыл бұрын
it helps me a lot
@saeedahmadkhan85544 жыл бұрын
Love u
@lalitmohan44452 жыл бұрын
If we see all the organic reaction pratically we an under stand better
@knowingchemistry7357 жыл бұрын
great explanation...sir u made my day !!
@madara.n6 жыл бұрын
This helped me a lot. Thank you!
@nahulaluckshman94894 жыл бұрын
thanks a lot
@AuroraBorealis8506 жыл бұрын
But though explanation was nice i got it nd appreciate you
@Naturevs5 жыл бұрын
Lia qiao ...can yu tell me aboute Qualitative test name for monosacride oligosacrides and polysacrid i waiting fr yu
@taranveer33703 жыл бұрын
Thanku very much 😊😊
@souvikroy113 жыл бұрын
Very nice.
@1dan16095 жыл бұрын
Thank you so much
@poojakumari-qj6im2 жыл бұрын
Very nice
@benanerad21737 жыл бұрын
so good!! this is what i need thank you love u
@fatimanaveed5269 Жыл бұрын
Ty
@susmitamondal47955 жыл бұрын
Thank you .
@israelaster91116 жыл бұрын
it is very nice and help full
@bamboomed2155 жыл бұрын
well done
@joleyreliquias25474 жыл бұрын
Why are Fehling’s A and B solutions made separately when they would be mixed afterwards?
@RaExpIn4 жыл бұрын
It's just to increase shelf life. The complex would slowly decompose after a while, while these two solutions can be stored for months or even years.
@puttarajuv.r9873 жыл бұрын
Thanks
@ansaricraft80513 жыл бұрын
Keep up man
@lakshaydhull75273 жыл бұрын
Amazing
@atrimdas15345 жыл бұрын
brilliant
@anushkamishra79265 ай бұрын
What about fructose content sir . How to find it ?
@bikramroy37835 жыл бұрын
Darun
@user-ig6wk8tz7m7 жыл бұрын
Excuse me, can I ask you why the sucrose + citronensäure(citric acid anhydrous) mixture shows the color change? I want to know the principles behind that.
@user-ig6wk8tz7m7 жыл бұрын
If you can explain for me, I'd be very happy. fullofsoulman@gmail.com this is my e-mail address. You can send me an e-mail for additional explanation. Have a nice day ! :)
@pigeonlove3 жыл бұрын
How thick do you have to be to write all that out instead of googling it yourself
@tanmay______3 жыл бұрын
It's been four years, but I'm writing so that someone else doesn't have to google. Basically, sucrose doesn't give the Fehling's test because the aldehyde group (-CHO) is locked up inside the ring due to the glycosidic bond formed. But this glycosidic bond can be broken up in acidic environments, so when the citric acid is added along with the sucrose, it breaks down into glucose and fructose, which are the constituent molecules of sucrose. The glucose and fructose molecules are the ones which give the Fehling's test and the solution then turns brown.
@deepikabharti99096 жыл бұрын
Thanks for the awesome video.
@HariharanAnnadurai6 жыл бұрын
thx a lot
@rubellite57664 жыл бұрын
Really helped a lot
@joaomateusciprianodasilva52012 жыл бұрын
so cool man
@alaababat45617 жыл бұрын
Thank yooou it was helpful 😊
@vedanapunsuk49382 жыл бұрын
3rd one looks tasty
@firdouseflower6550 Жыл бұрын
Why fehling test doesn't give positive results with benzaldehyde؟؟؟answer the question please
@porvik.sharma3 жыл бұрын
but you didn't told us if Aromatic Aldehydes give fehling test ?
@unnikrishnanthaliyil95904 жыл бұрын
Thanks....... 🙏😇
@shamilathahir62837 жыл бұрын
really helpful
@bera99193 жыл бұрын
teşekkürler organik kimya gecenin bu saatinde izlediğim videoya bak!!!
@AbdulHakeem1.03 жыл бұрын
Nice
@sunnysadhwani77627 жыл бұрын
Fehling's solution test-🤕🤒😞😖😭in this test aldehyde react with 2 molecules of copper sulphate and also with two molecules of sodium carbonate gives CO2 which is called as brick red precipitate with its byproducts carboxylic acid with 2 molecules sodium sulphate and 2 molecules of water
@belenghohn70935 жыл бұрын
Thank you!!
@alebass29486 жыл бұрын
Can you also explain the reaction if you add starch or lactose in a fehling's solution? this is for my research x3 thanks inn advance
@RaExpIn6 жыл бұрын
Theoretically amylose is a reducing polysaccharide, because the anomeric carbon atom is at the end of the chain. Nevertheless as far as I know, due to the large molecular weight, the number of functional groups per gramm is too small to get a visible reduction of copper. In lactose (3:45) you can see that the anomeric carbon atom of the glucose is not connected to the galactose. So the ring is able to open, while the connection from the 4th carbon atom of the glucose to the 1st one of the galactose stays.
@alebass29486 жыл бұрын
Thank you thank you so much! TBH i have learned more stuff about this experiment than in my class XD... i will recommend this vid to my teacher and hope she will learn something from it too (>-
@RaExpIn6 жыл бұрын
You're welcome :D
@HighAltitudeEnjoyer2 жыл бұрын
I smelled large amount of vapours of fehlings sol a+b+atetadehyde... Is it harmful
@vgcxv31832 жыл бұрын
6. What are the disadvantages of Fehling's test
@RaExpIn2 жыл бұрын
It reacts with all kinds of reducing compounds and sugars. So it can't differentiate between aldoses and ketoses or other compounds like formaldehyde and acetaldehyde. To differentiate aldoses and ketoses the seliwanow test can be used.
@sunnysadhwani77627 жыл бұрын
in the form of reaction RCHO+2CuSO4+2NaCO3=RCOOH+2Na2SO4+CO2+H2O
@user-ej8rf1ne6p11 ай бұрын
❤
@sanjaysanjay-zx9ph3 жыл бұрын
Sir you explain in kannada please
@razitok30697 жыл бұрын
how this occur
@OmPrakash-ej2xb5 жыл бұрын
Please translate in hindi sir
@OmPrakash-ej2xb5 жыл бұрын
I dont understand okeyyyyy
@mazinmohammed71617 жыл бұрын
there's no such thing as splited**
@RaExpIn7 жыл бұрын
As you can hear I'm a non-native speaker and scientific language is even more difficult. So, I guess this happens quite often in my videos... My goal is that people understand what I'm talking about :)
@harshjain31224 жыл бұрын
@@RaExpIn it's alright bro. As u can see, he liked his own comment. So no one agree with him