What is created from this ion?
I know I didn't draw it particularly nicely, but we wrote it down in such a way that this ion is formed. However, you still need the aldehyde group to detect it with the Fehling test. What happens to this ion then?
Chemistry Fehling sample?
Hello, I have to formulate the reaction equation for what happens to glucose in the Fehling test. I'm stuck with the oxidation equation… Or is my approach wrong?
Chemistry fail test?
Hey, I have these molecules and I have to decide which ones will give a positive result in the Fehling test. I would have said the 1st and 3rd molecules because they contain an aldehyde group. However, some Google searches say that number 1 is incorrect because it somehow doesn't occur due to the proximity…
Does the aldehyde group react at all in the Fehling test?
Hello, I've been wondering for a long time how it's possible that the Fehling test detects aldehydes (positive = red precipitate due to reduced copper). However, according to the latest findings, the aldehyde group doesn't react to form a carboxyl group, but rather to glucosone. How do you then know that you have an aldehyde?…
Fehling test for sorbose?
Heyyy 🙂 We received an assignment from our chemistry teacher and I don't know what to do next… "The Fehling test is performed with sorbose. Justify the expected result with structural formula extracts." Would be nice if you could help me LG
Chemistry Fehling's test?
Good day or evening my question is: Describe the processes in Fehling's test using the example of a compound of your choice with a reaction equation and partial electron equations. I haven't covered this topic in class yet and I don't know how to approach it. Can anyone help? Thank you very much in advance!
Fehling test for sucrose?
I am looking for an explanation for the following experiment: Sucrose (with water) was heated and slightly caramelized. Then the Fehling test was performed, and it was positive. Normally, it would be negative due to the glycosidic bond, and I'm not entirely sure how heating could change this…
What are the reaction equations (Fehling test)?
Can someone tell me the reaction equations for the Fehling test with glucose, fructose, and sucrose? (And explain)
Sugar solution?
Hey. I have a question: Is my table roughly correct? You add 5, 10, 15, 20 grams of sugar to 95, 90, 85, 80 grams of water. You now have a 5, 10… percent sugar solution. Is this statement correct: The higher the mass concentration of a sugar solution, the smaller the volume (in ml)?…
How do you solve this reaction equation?
Hello, I can't balance the hydrogen and oxygen atoms and need help.
Does isomaltulose have a reducing effect?
Hello folks, I have a chemistry exam tomorrow, and I've been working on some problems for which our teacher uploaded the solutions. It says that isomaltulose isn't a reducing sugar because the molecules are two full acetals (see image, green for the teacher, VA = his marking for the full acetal). But that can't be…
I'm stuck on the two chemistry exercises?
There are exactly 2 questions that I don't understand! Hex-2-enal has two stereoisomers. Draw the isomers and name the molecules. -Write down the reaction equation for the detection of hex-2-enal using Fehling's solution. I've tried to draw the stereoisomers here. Could you give me a tip on how to draw them?