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Why is it important that the Fehling's solution for use as a reagent by freshly mixed?
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What happen when you react sugar like glucose and fructose with tollen' s reagent and the Fehlings solution?
Glucose oxidizes very quickly, and creates a silver mirror layer between the glucose solution and the Tollens' reagent. This is because of how the ketose reacts and reduces the silver molecules in Tollen's reagent.
Why should benzidine reagent be freshly prepared?
Benzidine reagent is used to test blood in urine. It needs to be freshly prepared in order to obtain best results, otherwise, possible contamination may occur.
What reagent is used to test for unsaturated hydrocarbons?
This reagent is bromine in solution.
What is the color when fehling a and fehling b are being mixed?
When Fehling A & B are mixed in equal quantities... Fehlings Reagent is formed which is DEEP BLUE in colour Hope that answers your question! :)
What reagent is used to detect glucose in a solution?
You are not supposed to use buret reagent to detect sugar carbohydrates in a solution. Buret reagent is used to detect proteins. Try using iodine ( I2KI)
What chemical formula for Fehlings reagent?
The Fehling A solution contain copper sulfate.The Fehling B solution contain sodium potassium tartrate and sodium hydroxide.
What happen when you react sugar like glucose and fructose with tollen' s reagent and the Fehlings solution?
Glucose oxidizes very quickly, and creates a silver mirror layer between the glucose solution and the Tollens' reagent. This is because of how the ketose reacts and reduces the silver molecules in Tollen's reagent.
Why is it important not to pipette a reagent solution directly from bottle of a reagent stock solution?
Contamination. Your stock solution has a known molarity and should not be contaminated with anything. Even a "clean" pipette tip. Its just good lab etiquette.
Why should benzidine reagent be freshly prepared?
Benzidine reagent is used to test blood in urine. It needs to be freshly prepared in order to obtain best results, otherwise, possible contamination may occur.
Is honey a reducing sugar or non reducing?
yes because honey is a monosaccharide All monosaccharides reduce weak oxidizing agents such as Cu2+ in fehlings's reagent.
What reagent is used to test for unsaturated hydrocarbons?
This reagent is bromine in solution.
What reagent is used to detect protein in a solution?
biuret reagent
What is the reagent used to test proteins?
Buiret Reagent
What is the color when fehling a and fehling b are being mixed?
When Fehling A & B are mixed in equal quantities... Fehlings Reagent is formed which is DEEP BLUE in colour Hope that answers your question! :)
Reaction of benzaldehyde with Schiff's reagent?
The Schiff reagent is a product of Fuchsine or Pararosaniline. The Schiff reagent is used to test for aldehydes. Benzaldehyde is added to the decolorized Schiff reagent and a purple/magenta color appears.
What reagent is used to detect glucose in a solution?
You are not supposed to use buret reagent to detect sugar carbohydrates in a solution. Buret reagent is used to detect proteins. Try using iodine ( I2KI)
Which substance will give a red precipitate when heated with Fehling solution?
Cu2O gives red ppt when heated with fehlings soln
