EP ESSENTIAL ORG.CHEM.-MOD.MASTERING
3rd Edition
ISBN: 9780133858501
Author: Bruice
Publisher: PEARSON CO
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Textbook Question
Chapter 20.2, Problem 4P
Draw the structure of an optically active fat that, when hydrolyzed, gives the same products as the fat in Problem 3.
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HW 11 #19
Trehalose and maltose are both dimers of glucose. However, they have considereably
different reactivities. Concisely explain why these differences are observed.
но
но
HO
HO
но
"HO
он
но
он
OH
O HO
OHOH
но
trehalose
maltose
1. Malthose is a reducing sugar while trehalose is not.
2. Trehalose is very resistant to acid hydrolysis while maltose can be acid-hydrolyzed with
ease.
C. Trehalose and maltose are both dimers of glucose. However, they have considereably
different reactivities. Concisely explain why these differences are observed.
HO
НО
НО
HO
Но
HO
OH
Он
HO
OHOH
Но
trehalose
maltose
1. Malthose is a reducing sugar while trehalose is not.
2. Trehalose is very resistant to acid hydrolysis while maltose can be acid-hydrolyzed with
ease.
Chapter 20 Solutions
EP ESSENTIAL ORG.CHEM.-MOD.MASTERING
Ch. 20.1 - Prob. 1PCh. 20.2 - Prob. 2PCh. 20.2 - Prob. 3PCh. 20.2 - Draw the structure of an optically active fat...Ch. 20.4 - Prob. 6PCh. 20.4 - Prob. 7PCh. 20.4 - The membrane phospholipids in deer have a higher...Ch. 20.4 - Prob. 9PCh. 20.6 - Prob. 10PCh. 20.6 - Prob. 11P
Ch. 20.6 - Prob. 12PCh. 20.7 - Propose a mechanism for the biosynthesis of...Ch. 20.7 - Prob. 14PCh. 20.8 - Draw the individual 1,2-hydride and 1,2-methyl...Ch. 20.9 - Prob. 16PCh. 20 - Prob. 17PCh. 20 - Prob. 18PCh. 20 - Cardiolipins are found in heart muscles. Draw the...Ch. 20 - Prob. 20PCh. 20 - 5-Androstene-3,17-dione is isomerized to...Ch. 20 - Prob. 22PCh. 20 - Prob. 23PCh. 20 - Prob. 24PCh. 20 - Eudesmol is a sesquiterpene found in eucalyptus....
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- 1. Bromine test is a test used to determine the degree of unsaturation in fatty acids. A colorless solution indicates a positive result. Which of the following fatty acids will not give a colorless solution? oleic acid Linoleic acid Lauric acid Linolenic acid 2. The following can cause the breaking of hydrogen bond, except? addition of silver nitrate heating agitation addition of acetic acid none of the abovearrow_forwardFats can be either optically active or optically inactive, depending on their structure. Draw the structure of an optically active fat that yields 2 equivalents of stearic acid and 1 equivalent of oleic acid on hydrolysis. Draw the structure of an optically inactive fat that yields the same products.arrow_forwardLinoleic acid is shown below. What makes this fatty acid particularly susceptible to autoxidation? 1. The red CH bond has a low bond dissociation energy because it is doubly allylic. 2. The red CH bond has a high bond dissociation energy because it is doubly allylic. 3. The red CH bond is the most accessible to reaction with O2 because it is the least sterically crowded CH bond. 4. Both 2 and 3.arrow_forward
- 4) Structure: the appropriate box. CHO -OH H- HO- -H HO -H Write the requested cyclized form of the given carbohydrates in B-pyranose a-furanose CH₂OHarrow_forwarda. In an aqueous solution, d-glucose exists in equilibrium with two six-membered ring compounds. Draw the structures of these compounds.b. Which of the six-membered ring compounds will be the major product?arrow_forward27. Which of the following statements about cholesterol is not correct? CH3 CH3 H. d но Cholesterol (a) Cholesterol is a steroid that contains a tetracyclic ring system. (b) Cholesterol is a steroid that contains 8 chiral carbons and can form 28 or 256 stereoisomers. (c) Each atom or group attached to a ring-junction carbon (i.e., carbons a -e) is in a trans or axial position. Because of this the tetracyclic ring system is mostly flat. (d) Cholesterol is used to synthesized vitamin D, bile acids, sex hormones, and adrenocorticoid hormones. (e) Cholesterol is not found in the cell membranes of animals.arrow_forward
- There is only one ketotriose, called dihydroxyacetone. Draw its structure.(arrow_forwardConsider the following fatty acids: 0 CH₂-(CH₂)2 C -OH Myristic Acid CH₂-(CH₂-CH=CH-CH₂-CH=CH-06- Lindles Acid A) What type of fatty acid is Linoleic Acid (Saturated Monounsaturated or Polyunsaturated)? B) Which fatty acid listed above would have the lower meking point C) Draw the structure of a triacylglycerol that contains tw molecules of file acid and one molecule of myristic acid D) True or False: As the number of carbons in a saturated fatty acid is the melting point decreases. Fals: As the number of double bonds in an unsaturated fatty increases thearrow_forwardPropose structural formulas for the following polysaccharides. Q.) Pectic acid is the main component of pectin, which is responsible for the formation of jellies from fruits and berries. Pectic acid is a polymer of d-galacturonic acid in the pyranose form joined by a-1,4-glycosidic bonds.arrow_forward
- a). Identify the type of glycosidic bond (α or b, 1→4 or 1→6) b). Circle the reducing end, if any.arrow_forwardIn solution, glucose is mostly found in the cyclic hemiacetal state, which lacks an aldehyde group. How are mild oxidising agents able to oxidise glucose?arrow_forwardA reddish color is obtained when compound A (a disaccharide) is reacted with Benedict solution. Is this compound more likely maltose or sucrosearrow_forward
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