Wonderful Demonstration as well as explanation!

An excellent explanation.

Very good explanation

Thank you so much This made easier to understand the test

Thank you sir You made life easy

This helped me a lot. Thank you!

great quality video

Great video

Nice explaination

Good explanation and really helpful

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

@averageanon007

2 жыл бұрын

how do you remember the among us task

@werallgnnadieintheend

2 жыл бұрын

oooh yeaaah🤓😯🤗

@xx-zp4or

2 жыл бұрын

@@averageanon007 He is an Among us kid

@Uma_Vlogz

Жыл бұрын

I could never complete that task actually

so good!! this is what i need thank you love u

super cool video! the part about water bath was helpful. And also I didn't know about the toxicity of cuso4. Thank-you!

Thank you so much

Thanks for the awesome video.

Very nice.

Thanku very much 😊😊

Lots of information bro

Thank you .

it is very nice and help full

well done

thanks a lot

Very nice

Keep up man

thank you

Thank yooou it was helpful 😊

it helps me a lot

@saeedahmadkhan8554

3 жыл бұрын

Love u

brilliant

Amazing

Thanks

Really helped a lot

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!

thx a lot

What about fructose content sir . How to find it ?

Ty

great explanation...sir u made my day !!

so cool man

Thanks....... 🙏😇

If we see all the organic reaction pratically we an under stand better

Darun

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-ig6wk8tz7m

7 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 ! :)

@pigeonlove

3 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.

Thank you!!

Why are Fehling’s A and B solutions made separately when they would be mixed afterwards?

@RaExpIn

3 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.

really helpful

but you didn't told us if Aromatic Aldehydes give fehling test ?

Nice

Why fehling test doesn't give positive results with benzaldehyde؟؟؟answer the question please

3rd one looks tasty

But though explanation was nice i got it nd appreciate you

@Naturevs

5 жыл бұрын

Lia qiao ...can yu tell me aboute Qualitative test name for monosacride oligosacrides and polysacrid i waiting fr yu

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

@RaExpIn

6 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.

@alebass2948

6 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 (>-

@RaExpIn

6 жыл бұрын

You're welcome :D

6. What are the disadvantages of Fehling's test

@RaExpIn

2 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.

I smelled large amount of vapours of fehlings sol a+b+atetadehyde... Is it harmful

❤

how this occur

teşekkürler organik kimya gecenin bu saatinde izlediğim videoya bak!!!

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

in the form of reaction RCHO+2CuSO4+2NaCO3=RCOOH+2Na2SO4+CO2+H2O

Sir you explain in kannada please

Please translate in hindi sir

I dont understand okeyyyyy

there's no such thing as splited**

@RaExpIn

7 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 :)

@harshjain3122

3 жыл бұрын

@@RaExpIn it's alright bro. As u can see, he liked his own comment. So no one agree with him

thank you

Thanks

❤