Why should ketoses not react with Benedict's reagent? Think about the type of reaction and be specific!
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Why should ketoses not react with Benedict's reagent? Think about the type of reaction and be...
Explain from the above, why Benedict's reagent yields positive results, not only for aldoses but also for ketoses. Rapid Keto tautomer Enol tautomer
To a solution of sucrose, Benedict's reagent is added and the solution is heated. What reaction would you expect and why?
Explain why fructose, an alpha-hydroxyketose, reacts with Benedict's reagent. What structural rearrangement is neccessary for this reaction to occur
1. Why does the basic (ammonia) reaction condition used with the Benedict's reagent test enable you to differentiate a possible hydrolysis of a pure synthetic sucrose sample from an incomplete synthesis of a sucrose sample in which glucose and fructose might still be present in low amounts?
8. Discuss the results of the Benedict's test. Which compounds gave a positive result, and why? Which gave a negative result, and why? Use your data and the preliminary reading material to help answer this question Use your understanding of the Benedict's test and the iodoform test to answer the following 6. Two compounds have the molecular formula C3H.O.Draw their structural formulas and names using the following test results a Compound A forms a red orange precipitate with Benedict's reagent,...
What type of reaction occurs when glucose reacts with the Benedict's solution. Explain what chemical change glucose and reagent in Benedict's solution undergoes. Give the names of products.
1. Show the chemical reaction that takes place when Benedict's reagent (Cu") reacts with glucose (use open chain Fisher projection). 2. Do you expect fructose to give a positive reaction with Barfoed's reagent? Explain why or why not. Indicate which of the test carbohydrates (glucose, fructose, lactose, sucrose, starch) would give 5- hydroxymethylfurfural when heated with hydrochloric acid. (See description of reactions for Barfoed's reagent and Seliwanoffs reagent). 3. 121
the reaction between Benedict's reagent? а) сно + 2*2 он, ? b) Санчо + 2Cu2 он“ ? 120H -
2) Why do you think we add an excess of the relatively unstable hydrogen peroxide or hydrobromic acid to the reaction? Group of answer choices A) Some of the reagent will evaporate due to the heat of reaction B) Some of the reagent will be voted out of the flask. C) Some of the reagent will inherently not be reactive. D) Some of the reagent will be lost to decomposition without having a chance to react.
Using your knowledge of reagents that react with alkenes, what would be a reagent that you could use to check and see if the hydrogenation has completed. Hint: think of reagents that are colorful. Explain how you could determine if the reaction went to completion.