Question

Prelaboratory Exercise: Carbohydrates Name: Section: 1. Draw and give the names of a common aldohexose and a common ketohexose. 2. Do you predict that maltose will reduce cupric ion in Fehling's reagent in today's experiment? Why or why not? 3. Describe the structures of dextrin, maltose and amylose. How do they differ? 4. Draw structures for the molecules present in an equilibrium mixture of glucose in water solu tion.

Answer 1

Here is the Solution:

(1). Draw and and give the names of a common keto hexose. common aldohexose a -D The name of a common aldo hexose : Glucose. The name of a common ketonexose: Fructose Structure o Aldohexose Ketohexose Glucose fructose H 20 CH₂OH - I I 1 1 -9-9-YO 1 1 U-0-0- . -c - OH н —с — он I Сн, он CH₂OH

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