Organic Chemistry, Books a la Carte Edition (8th Edition)
8th Edition
ISBN: 9780134074580
Author: Bruice, Paula Yurkanis
Publisher: PEARSON
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Chapter 20, Problem 56P
Interpretation Introduction
Interpretation:
The method to determine which bottle contains D-lyxose is to be stated.
Concept Introduction:
Dilute nitric acid is a strong oxidizing agent. It is used to oxidize
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To synthesize D-galactose, a student went to the stockroom to get some D-lyxose to use as a starting material. She found that the labels had fallen off the bottles containing D-lyxose and D-xylose. How can she determine which bottle contains D-lyxose?
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26) What carbon (position) is used to make a glycosidic bond?
27) Draw a-D-maltose (a disaccharide composed of two a-D-glucose monosaccharides in an a-
1,4-glycosidic bond).
28) Draw B-D-lactose (a disaccharide composed of B-D-galactose and B-D-glucose in a B-1,4-
glycosidic bond).
*29) Draw an equation for the hydrolysis of a-D-maltose. (Will be reviewed in lab.)
CHM60 Lecture Worksheet: Carbohydrates
6
10
Chapter 20 Solutions
Organic Chemistry, Books a la Carte Edition (8th Edition)
Ch. 20.1 - Prob. 1PCh. 20.2 - Prob. 2PCh. 20.2 - Prob. 3PCh. 20.3 - Prob. 4PCh. 20.3 - Prob. 5PCh. 20.3 - Prob. 6PCh. 20.4 - Prob. 7PCh. 20.4 - Prob. 8PCh. 20.5 - Prob. 9PCh. 20.5 - Prob. 10P
Ch. 20.5 - Prob. 11PCh. 20.6 - Prob. 12PCh. 20.6 - Prob. 13PCh. 20.6 - Prob. 14PCh. 20.7 - Prob. 15PCh. 20.8 - Prob. 16PCh. 20.9 - Prob. 18PCh. 20.10 - Prob. 20PCh. 20.10 - Prob. 21PCh. 20.10 - Prob. 22PCh. 20.11 - Prob. 23PCh. 20.11 - Prob. 24PCh. 20.12 - Prob. 25PCh. 20.12 - Prob. 26PCh. 20.14 - Prob. 28PCh. 20.15 - Prob. 29PCh. 20.15 - Prob. 30PCh. 20.16 - Prob. 31PCh. 20.17 - Prob. 32PCh. 20.18 - Refer to Figure 20.5 to answer the following...Ch. 20 - Prob. 34PCh. 20 - Prob. 35PCh. 20 - Prob. 36PCh. 20 - Prob. 37PCh. 20 - Prob. 38PCh. 20 - Prob. 39PCh. 20 - Prob. 40PCh. 20 - Prob. 41PCh. 20 - Prob. 42PCh. 20 - Prob. 43PCh. 20 - Prob. 44PCh. 20 - Prob. 45PCh. 20 - Prob. 46PCh. 20 - Prob. 47PCh. 20 - Prob. 48PCh. 20 - The 1H NMR spectrum of D-glucose in D2O exhibits...Ch. 20 - Prob. 50PCh. 20 - Prob. 51PCh. 20 - Prob. 52PCh. 20 - Prob. 53PCh. 20 - Prob. 54PCh. 20 - Prob. 55PCh. 20 - Prob. 56PCh. 20 - Prob. 57PCh. 20 - Prob. 58PCh. 20 - Prob. 59PCh. 20 - Prob. 60PCh. 20 - Prob. 61PCh. 20 - A hexose is obtained when the residue of a shrub...Ch. 20 - Prob. 63PCh. 20 - Prob. 64PCh. 20 - Prob. 65PCh. 20 - Prob. 66PCh. 20 - Prob. 67PCh. 20 - Prob. 68PCh. 20 - Prob. 69PCh. 20 - Prob. 70PCh. 20 - Prob. 71PCh. 20 - Prob. 72PCh. 20 - Prob. 73P
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- Deduce the structure of the disaccharide isomaltose from the following data.a. Hydrolysis yields D-glucose exclusively. b. Isomaltose is cleaved with α-glycosidase enzymes. c. Isomaltose is a reducing sugar. d. Methylation with excess CH3I, Ag2O and then hydrolysis with H3O+ forms two products:arrow_forwardRaffinose is a trisaccharide found in whole grains. What is the correct description of the glycosidic linkage(s) in raffinose?arrow_forwardConsider the disaccharide isomaltose. OH H CH OH H OH H H OH H H OH CH, H isomaltose OH H Н ОН ОН What monosaccharides are formed when isomaltose is hydrolyzed? Modify the structure of the disaccharide to identify the two monosaccharide products.arrow_forward
- a. Identify the glycosidic linkage in disaccharide C, classify the glycosidic bond as α or β, and use numbers to designate its location.b. Identify the lettered compounds in the following reaction.arrow_forwardedu.co D- and L- designations are used to distinguish between the two possible enantiomers of the monosaccharide, galactose. From the Fischer projection, determine the designation of this monosaccharide. H H— HO HO H- =0 c= -OH —H -H Question 8 of 20 OH CH₂OH A) D B) L C) D, L Submit D) This monosaccharide contains no chiral centers. : +arrow_forwardDisaccharides are formed from two monosaccharides that are held glycosidic bond. Glycosidic bonds are found only in carbohydr Work on your own. Look at the molecules labelled A and B. Figure 2 Structural formula for glucose showing how (a) a chain becomes (b) a fg OH-C-H HO H-C-OH H-C-OH OH "CH,OH e diagr nosac es up mbine Identify monosaccharides Activity 1 OH HH ОН ОН H OH O C-C-C-C-C-C-H H-C-C-C н ОН ОН Н H. H H HO. molecule A molecule B Explain why both molecules A and B are carbohydrates. Which molecule is a triose and which is a hexose? Explain yu Write down the chemical formula for each molecule. Explain why both molecules A and B are monosaccharides Disaccharides nk the monosaccharides together. Table 2 on page 47 ch homicarrow_forward
- Yeast, Saccharomyces cerevisiae, fermented sucrose faster than glucose and fructose. Why? and why was it not able to ferment galactose?arrow_forward4. Draw the structures for the oxidation of the following carbohydrates. a) C-H 主 H CH CHOH erythrose b) [0] Ho CHOH glicese 5. Draw the structures for the reduction of the following carbohydrates. Ho CHOH Cat. C=0 + Hz It. OH CHOH olwollol enythrulse b) Cat. Ho CHCH gucosearrow_forwardAt equilibrium in solution, D-glucose consists of a mixture of its anomers. Which statement most accurately describes the solution? A) consists of approximately equal amounts of the a- and B-anomers B) the a-anomer is more stable and is slightly preferred over the ß-anomer C) the ß-anomer predominates over the a-anomer by a ratio of approximately 2:1 D) straight-chain form is present in high concentration E) none of the above Glucose and galactose are A) epimers B) enantiomers C) diastereomers D) anomers E) none of the above of each other. Any sugar that has a free aldehyde group is called a(n) A) reducing sugar B) non-reducing sugar C) ketose D) aldohexose E) alditolarrow_forward
- 14. (a) Identify the acetal and the ketal group in the following disaccharide. (b) Decide whether the compound is a non-reducing or reducing sugar. OH НО HƠ HO Н HO Н НО HO 15. (a) Identify the glycosidic bond in the following disaccharide. (b) Decide whether the compound is a non-reducing or reducing sugar. (c) Polysaccharide units are usually bonded together with a or B 1, 6 or 1, 4 linkages. What linkage is used in the disaccharide shown below? s) НО НО НО HO НО -OH OH -H OH CH2OH 16. Draw the structure for 1,4-B-D-galactopyranosyl-D-glucose. ( но- 17. Assign an R/S designation to each chirality center in the following compound: ( CHO НО -OHarrow_forwardUsing the attached image which one of a,b,c, or d represent deoxyribosearrow_forward37- Complete the equation by giving the products of the hydrolysis of lactose. galactose + glucose starch + glycogen fructose + galactose maltose + sucrose fructose + glucose glucose + glucose cellulose + amylosearrow_forward
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