CNCT ORG CHEM 6 2020
6th Edition
ISBN: 9781266807244
Author: SMITH
Publisher: MCG
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Question
Chapter 26.9, Problem 21P
Interpretation Introduction
(a)
Interpretation: The given compound is to be classified as reducing or nonreducing sugar.
Concept introduction: A carbohydrate that contains hemiacetal is classified as reducing sugar whereas a carbohydrate which contains acetal is classified as nonreducing sugar. The reducing sugars are in equilibrium with an acyclic
Interpretation Introduction
(b)
Interpretation: The given compound is to be classified as reducing or nonreducing sugar.
Concept introduction: A carbohydrate that contains hemiacetal is classified as reducing sugar whereas a carbohydrate which contains acetal is classified as nonreducing sugar. The reducing sugars are in equilibrium with an acyclic aldehyde.
Interpretation Introduction
(c)
Interpretation: The given compound is to be classified as reducing or nonreducing sugar.
Concept introduction: A carbohydrate that contains hemiacetal is classified as reducing sugar whereas a carbohydrate which contains acetal is classified as nonreducing sugar. The reducing sugars are in equilibrium with an acyclic aldehyde.
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Which monosaccharide is a-glucose?
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SOURCE: GENERAL ORGANIC AND BIOLOGICAL CHEMISTRY BY SMITH 4TH EDITION
Report Table CHO.13: Results of Chemical Tests on Unknown Sample
Benedict's test: Blue solution
Choose...
A. reducing sugar not found
B. reducing sugar found
Fermentation test: Gas bubbles
Choose...
A. fermentation occured
B. fermentation did not occured
Seliwanoff's test: Red solution
Choose...
A. Aldose present
b. ketose present
c. neither
Iodine test: Colorless to brown solution
Choose...
a. amylose present
b. amylose not present
In your own words, describe the information you have gathered from each test about your unknown.
Which carbohydrate do you think your unknown is?
Explain your answer
A. glucose
b. fructose
c. sucrose
d. lactose
e. starch
d. cant not be determined
Chapter 26 Solutions
CNCT ORG CHEM 6 2020
Ch. 26.2 - Prob. 1PCh. 26.2 - Prob. 2PCh. 26.2 - Label each stereogenic center as R or S. a. b. c....Ch. 26.2 - Convert the ball-and-stick model to a Fischer...Ch. 26.2 - Prob. 5PCh. 26.2 - Prob. 6PCh. 26.3 - Prob. 7PCh. 26.3 - Prob. 8PCh. 26.4 - Prob. 9PCh. 26.4 - Prob. 10P
Ch. 26.6 - Prob. 11PCh. 26.6 - Prob. 12PCh. 26.6 - Prob. 13PCh. 26.6 - Prob. 14PCh. 26.6 - Prob. 15PCh. 26.7 - Prob. 16PCh. 26.7 - Draw a stepwise mechanism for the following...Ch. 26.7 - Prob. 18PCh. 26.8 - Prob. 19PCh. 26.9 - Prob. 20PCh. 26.9 - Prob. 21PCh. 26.9 - Draw the products formed when D-arabinose is...Ch. 26.9 - Prob. 23PCh. 26.10 - Prob. 24PCh. 26.10 - Prob. 25PCh. 26.10 - Prob. 26PCh. 26.10 - Prob. 27PCh. 26.11 - Prob. 28PCh. 26.11 - Prob. 29PCh. 26.12 - Prob. 30PCh. 26.12 - Prob. 31PCh. 26.13 - Prob. 32PCh. 26.13 - Prob. 33PCh. 26.13 - Problem-28.35
Draw the structures of the...Ch. 26.13 - Prob. 35PCh. 26 - 28.37 Convert each ball-and-stick model to a...Ch. 26 - Prob. 37PCh. 26 - Prob. 38PCh. 26 - 28.40 Convert each compound to a Fischer...Ch. 26 - Prob. 40PCh. 26 - Prob. 41PCh. 26 - 28.43 Draw a Haworth projection for each compound...Ch. 26 - Prob. 43PCh. 26 - 28.45 Draw both pyranose anomers of each...Ch. 26 - Prob. 45PCh. 26 - 28.50 Draw the products formed when D-altrose is...Ch. 26 - 28.58 Draw a stepwise mechanism for the following...Ch. 26 - Prob. 62PCh. 26 - Prob. 63PCh. 26 - Prob. 64PCh. 26 - Prob. 65PCh. 26 - Prob. 66PCh. 26 - Prob. 67PCh. 26 - Prob. 68PCh. 26 - Prob. 69PCh. 26 - Prob. 70P
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- Fructose, present with glucose in honey, reacts with Benedicts reagent. Circle the structural features that enable fructose to react.arrow_forwardwhat type of saccharide is this molecule?arrow_forwardShow the dehydration reaction of the following disaccharides and describe their functions, importance, sources and structures. a. Lactose b. Maltose C. sucrosearrow_forward
- VI. Compare and contrast D-glucose and L-glucose based on the following propertiesa. Melting pointb. Optical Activityc. Solubilityd. Reaction with an acide. Reaction with a –diolarrow_forwardDraw the organic products formed when each compound is treated with H2, Pd-C. Indicate the three-dimensional structure of all stereoisomers formed.arrow_forwardConsider the tetrasaccharide stachyose drawn below. Stachyose is found in white jasmine, soybeans, and lentils. Because humans cannot digest it, its consumption causes flatulence.a. Label all glycoside bonds.b. Classify each glycosidic linkage as α or β and use numbers to designate its location between two rings (e.g., 1→4-β).c. What products are formed when stachyose is hydrolyzed with H3O+?d. Is stachyose a reducing sugar?e. What product is formed when stachyose is treated with excess CH3I, Ag2O?f. What products are formed when the product in (e) is treated with H3O+?arrow_forward
- D-Arabinose can exist in both pyranose and furanose forms.a. Draw the a and ß anomers of D-arabinofuranose.b. Draw the a and ß anomers of D-arabinopyranosearrow_forwardWhich monosaccharide is a-glucose? CH,OH CH,OH CH,OH CH,OH H. OH O. H. H. OH OH H. H. H. H. OH H. OH OH H. OH H. H H. H. H. B C OD OB OC OAarrow_forwardA monosaccharide that consists of 4 carbon atoms, one of which is part of a aldehyde functional group, is classified as a(n) a). Aldotetrose b). Aldohexose c). Ketotetrose d). Ketohexosearrow_forward
- Draw the organic products formed in attached reactions?arrow_forward49. The following compound is a(n) нонно H,N-C-ċ-Ѭċ-ċ-OH H;NCH;CH;CH;CH; H A. monosaccharide B. monopeptide C. disaccharide D. dipeptide E. diglyceridearrow_forwarda. Classify this monosaccharide (e.g., aldotriose)b. Does it have the D or L configuration? c. Which carbon and oxygen become bonded in the furanose ring form of this monosaccharide (e.g., C2O6, where O6 means the oxygen on carbon 6, or "not formed")? d. Which carbon and oxygen become bonded in the pyranose ring form of this monosaccharide e.g., C2O6 or "not formed"?arrow_forward
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