Chemistry for Today: General, Organic, and Biochemistry
9th Edition
ISBN: 9781305960060
Author: Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Publisher: Cengage Learning
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Textbook Question
Chapter 18, Problem 18.22E
Write reactions to show how each of the following products might be prepared from a typical triglyceride present in the source given. Use Table 18.1 as an aid.
a. Glycerol from beef fat
b. Stearic acid from beef fat
c. A margarine from corn oil
d. Soaps from lard
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Experiment:
Each team will be provided with 5g of a mixture of acetanilide and salicylic acid. You will divide it into three 1.5 g portions in separate 125 mL Erlenmeyer flasks savıng some for melting point analysis. Dissolve the mixture in each flask in ~60mL of DI water by heating to boiling on a hotplate. Take the flasks off the hotplate once you have a clear solution and let them stand on the bench top for 5 mins and then allow them to cool as described below.
Sample A-Let the first sample cool slowly to room temperature by letting it stand on your lab bench, with occasional stirring to promote crystallization.
Sample B-Cool the second sample 1n a tap-water bath to 10-15 °C
Sample C-Cool the third sample in an ice-bath to 0-2 °C
Results:
weight after recrystalization and melting point temp.
A=0.624g,102-115°
B=0.765g, 80-105°
C=1.135g, 77-108
What is the percent yield of A,B, and C.
Chapter 18 Solutions
Chemistry for Today: General, Organic, and Biochemistry
Ch. 18 - What is the basis for deciding if a substance is a...Ch. 18 - List two major functions of lipids in the human...Ch. 18 - What functional group is common to all...Ch. 18 - Prob. 18.4ECh. 18 - Prob. 18.5ECh. 18 - Describe four structural characteristics exhibited...Ch. 18 - Describe the structure of a micelle formed by the...Ch. 18 - Prob. 18.8ECh. 18 - Prob. 18.9ECh. 18 - Explain why the melting points of unsaturated...
Ch. 18 - What structural feature of a fatty acid is...Ch. 18 - How are fats and oils structurally similar? How...Ch. 18 - From Figure 18.7, arrange the following substances...Ch. 18 - Draw the structure of a triglyceride that contains...Ch. 18 - Prob. 18.15ECh. 18 - The percentage of fatty acid composition of two...Ch. 18 - Prob. 18.17ECh. 18 - Prob. 18.18ECh. 18 - Prob. 18.19ECh. 18 - Why is the hydrogenation of vegetable oils of...Ch. 18 - Prob. 18.21ECh. 18 - Write reactions to show how each of the following...Ch. 18 - Draw the structure of a wax formed from oleic acid...Ch. 18 - Prob. 18.24ECh. 18 - Draw the structure of a wax formed from stearic...Ch. 18 - Prob. 18.26ECh. 18 - Prob. 18.27ECh. 18 - Draw the general block diagram structure of a...Ch. 18 - Draw the structure of a phosphoglyceride...Ch. 18 - Describe two biological roles served by the...Ch. 18 - Prob. 18.31ECh. 18 - What is the structural difference between a...Ch. 18 - Prob. 18.33ECh. 18 - Prob. 18.34ECh. 18 - List two structural differences between...Ch. 18 - Prob. 18.36ECh. 18 - Describe the structural similarities and...Ch. 18 - Give another name for glycolipids. In what tissues...Ch. 18 - Prob. 18.39ECh. 18 - Prob. 18.40ECh. 18 - How does the polarity of the phosphoglycerides...Ch. 18 - Prob. 18.42ECh. 18 - Prob. 18.43ECh. 18 - Prob. 18.44ECh. 18 - Explain how bile salts aid in the digestion of...Ch. 18 - Prob. 18.46ECh. 18 - Prob. 18.47ECh. 18 - Prob. 18.48ECh. 18 - Prob. 18.49ECh. 18 - Prob. 18.50ECh. 18 - How are testosterone and progesterone structurally...Ch. 18 - Prob. 18.52ECh. 18 - Prob. 18.53ECh. 18 - Prob. 18.54ECh. 18 - Prob. 18.55ECh. 18 - Prob. 18.56ECh. 18 - Prob. 18.57ECh. 18 - Prob. 18.58ECh. 18 - Prob. 18.59ECh. 18 - Prob. 18.60ECh. 18 - Prob. 18.61ECh. 18 - Prob. 18.62ECh. 18 - Prob. 18.63ECh. 18 - Prob. 18.64ECh. 18 - Prob. 18.65ECh. 18 - Prob. 18.66ECh. 18 - Prob. 18.67ECh. 18 - Prob. 18.68ECh. 18 - Prob. 18.69ECh. 18 - Prob. 18.70ECh. 18 - Prob. 18.71ECh. 18 - When a doughnut is placed on a napkin, the napkin...Ch. 18 - Fats belong to the class of organic compounds...Ch. 18 - Identify each of the following characteristics as...Ch. 18 - Identify which sex hormones testosterone,...Ch. 18 - Prob. 18.76ECh. 18 - In diseases of the gallbladder, which of the...Ch. 18 - Steroids are classified as: a.carbohydrates....Ch. 18 - Accumulation of cholesterol leads to the hardening...Ch. 18 - Cholesterol, in spite of its bad reputation, is an...Ch. 18 - Bile is manufactured in the: a. duodenum. b....Ch. 18 - The basic structure of cell membrane is a: a....Ch. 18 - The mineralocorticoid _____ is a product of the...Ch. 18 - Prob. 18.84ECh. 18 - Prob. 18.85E
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