Concept explainers
(a)
Interpretation:
The structure of aD- aldotriose needs to be drawn.
Concept introduction:
Sugar molecules can be named as D or L sugars according to their most oxidized carbon at the top of the Fisher projection. Aldotriose is a three carbon
(b)
Interpretation:
The structure of a L- ketohexose needs to be drawn.
Concept introduction:
Sugar molecules can be named as D or L sugars according to their most oxidized carbon at the top of the Fisher projection. Ketohexose is a six carbon
(c)
Interpretation:
The structure of a four carbon aldonic acid needs to be drawn.
Concept introduction:
When an aldehyde group in an open chain aldose molecule is oxidized into

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Chapter 20 Solutions
GENERAL,ORGANIC, & BIOLOGICAL CHEM-ACCES
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