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Questions and Answers
What is the initial product when d-glucose is quantitatively oxidized to d-gluconic acid using glucose oxidase?
What is the initial product when d-glucose is quantitatively oxidized to d-gluconic acid using glucose oxidase?
- Uronic acid
- Intramolecular ester
- 1,5-lactone (correct)
- D-gluconic acid
What is the color of cupric oxide precipitate formed when Fehling’s solution oxidizes an aldose to an aldonate?
What is the color of cupric oxide precipitate formed when Fehling’s solution oxidizes an aldose to an aldonate?
- Yellow
- Brick-red (correct)
- Green
- Blue
How are uronic acids formed based on the oxidation of the hydroxymethyl group in aldoses?
How are uronic acids formed based on the oxidation of the hydroxymethyl group in aldoses?
- By forming a lactone ring in furanose form
- By converting to an aldonate
- By retaining the carbonyl function at C-1 (correct)
- By reducing the carbonyl function
Which form of pyranose is oxidized more rapidly when using Fehling’s solution to oxidize an aldose?
Which form of pyranose is oxidized more rapidly when using Fehling’s solution to oxidize an aldose?
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What suffix is added to the name of an aldose to obtain the acid name after oxidation?
What suffix is added to the name of an aldose to obtain the acid name after oxidation?
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