Question

9: Characterization of Carbohydrates - Pre-Lab Assignment Name Section is that it describes the carbon 1. The classification system for monosaccharides is similar to the IUPAC naming system chain length and carbonyl group of simple sugars." a) Indicate the two structural features specified by the "aldotriose classification b) Now draw the structure of an "aldotriose.“ 2. or the carbohydrate diagnostic tests, the Benedict's Test for reducing gars" is perhaps the most significant, as it was once the standard test for glucose in the urine of diabetics. The amount of brick-red precipitate formed in the Benedict's test is proportional to the amount of "reducing sugar present in the urine. In the chemical reaction of the Benedict's test, the two reactants are the sugar and the C lon. Consider performing the Benedict's Test on the monosaccharide you drew above. a) Which functional group enables the monosaccharide to act as a "reducing sugar? b) What type of chemical reaction does that organic functional group undergo? What is the product functional group? d) What type of chemical reaction does the Cuion of the Benedict's reagent undergo? What oxidation state does copper have on the product side of the chemical reaction? Use structures to show the reaction of an aldotriose with the Benedict's reagent. Draw all reactants and products, both organic and inorganic.

Answer 1

Ans 1 :

a)

The two structural features specified by "aldotriose" classification are :

1) The molecule contains an aldehyde functional group

2) the molecule has three carbon atoms

b)

The structure of an aldotriose is shown below ...

p=0-0-Ō H- C-OH ен,он