Organic Chemistry
5th Edition
ISBN: 9780078021558
Author: Janice Gorzynski Smith Dr.
Publisher: McGraw-Hill Education
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Chapter 21, Problem 21.37P
Two naturally occurring compounds that contain stable cyclic hemiacetals and acetals are monensin and digoxin, the chapter-opening molecule. Monensin, a polyether antibiotic produced by Streptomyces cinamonensis, is used as an additive in cattle feed. Digoxin is a widely prescribed cardiac drug used to increase the force of heart contractions. Label each acetal, hemiacetal, and ether in both compounds.
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Part 3: AHm,system
Mass of 1.00 M HCI
Vol. of 1.00 M HCI
Mass of NaOH(s)
Total Mass in Calorimeter
Mole product if
HCI limiting reactant
Trial 1
62.4009
1.511g
Mole product if
NaOH limiting reactant
Limiting reactant
Initial Temperature
Final Temperature
23.8°C
37.6°C
Change in Temperature
AHm,system (calculated)
Average AHm,system
(calculated)
(calculated)
(calculated)
Trial 2
64.006g
1.9599
(calculated)
(calculated)
(calculated)
(calculated)
(calculated)
(calculated)
24.7°C
41.9°C
(calculated)
(calculated)
(2 pts. each)
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Chapter 21 Solutions
Organic Chemistry
Ch. 21 - Rank the following compounds in order of...Ch. 21 - Prob. 21.2PCh. 21 - Give the IUPAC name for each aldehyde.Ch. 21 - Prob. 21.4PCh. 21 - Give the IUPAC name for each ketone.Ch. 21 - Prob. 21.6PCh. 21 - Prob. 21.7PCh. 21 - The boiling point of is significantly higher than...Ch. 21 - Which carbonyl group in each pair absorbs at a...Ch. 21 - Problem 21.10 Draw the structure of all...
Ch. 21 - Prob. 21.11PCh. 21 - Prob. 21.12PCh. 21 - Prob. 21.13PCh. 21 - Prob. 21.14PCh. 21 - Problem 21.15 Draw the product of each...Ch. 21 - Prob. 21.16PCh. 21 - Problem 21.17 Draw the products of the following...Ch. 21 - Problem 21.18 Outline a synthesis of each Wittig...Ch. 21 - Problem 21.19 Draw the products (including...Ch. 21 - Problem 21.20 What starting materials are needed...Ch. 21 - Prob. 21.21PCh. 21 - Problem 21.22 The product formed when reacts with...Ch. 21 - Prob. 21.23PCh. 21 - Prob. 21.24PCh. 21 - Prob. 21.25PCh. 21 - Prob. 21.26PCh. 21 - Prob. 21.27PCh. 21 - Problem 21.28 Draw a stepwise mechanism for the...Ch. 21 - Problem 21.29 Draw the products of each...Ch. 21 - Problem 21.30 Label each compound as an acetal, a...Ch. 21 - Problem 21.31 Draw a stepwise mechanism for the...Ch. 21 - Problem 21.32 Draw the products of each...Ch. 21 - Problem 21.33 Safrole is a naturally occurring...Ch. 21 - Prob. 21.34PCh. 21 - Problem 21.35 How would you use a protecting group...Ch. 21 - Prob. 21.36PCh. 21 - Problem 21.37 Two naturally occurring compounds...Ch. 21 - Problem 21.38 Draw the products of each...Ch. 21 - Prob. 21.39PCh. 21 - Problem 21.40 (a) Give the IUPAC name for A and B....Ch. 21 - 21.41 Rank the following compounds in order of...Ch. 21 - Prob. 21.42PCh. 21 - 21.43 Give the IUPAC name for each compound.
a....Ch. 21 - 21.44 Give the structure corresponding to each...Ch. 21 - Prob. 21.45PCh. 21 - 21.46 Draw the products of each reaction.
a. e....Ch. 21 - Prob. 21.47PCh. 21 - 21.48 Draw all stereoisomers formed in each...Ch. 21 - Prob. 21.49PCh. 21 - What products are formed when each acetal is...Ch. 21 - Prob. 21.51PCh. 21 - Prob. 21.52PCh. 21 - Which compound forms the higher concentration of...Ch. 21 - Prob. 21.54PCh. 21 - Prob. 21.55PCh. 21 - Prob. 21.56PCh. 21 - Prob. 21.57PCh. 21 - Devise a synthesis of each alkene using a Wittig...Ch. 21 - Devise a synthesis of each compound from...Ch. 21 - Prob. 21.60PCh. 21 - Devise a synthesis of each compound from ethanol...Ch. 21 - Prob. 21.62PCh. 21 - Prob. 21.63PCh. 21 - 21.64 Draw a stepwise mechanism for the following...Ch. 21 - 21.65 Draw a stepwise mechanism f or the following...Ch. 21 - Prob. 21.66PCh. 21 - 21.67 Draw a stepwise mechanism for each...Ch. 21 - 21.68 Draw a stepwise mechanism for the following...Ch. 21 - Prob. 21.69PCh. 21 - Prob. 21.70PCh. 21 - Prob. 21.71PCh. 21 - Prob. 21.72PCh. 21 - 21.73 Although the carbonyl absorption of cyclic...Ch. 21 - 21.74 Use the and data to determine the...Ch. 21 - 21.75 A solution of acetone in ethanol in the...Ch. 21 - Compounds A and B have molecular formula ....Ch. 21 - 21.77 An unknown compound C of molecular formula ...Ch. 21 - 21.78 An unknown compound D exhibits a strong...Ch. 21 - Prob. 21.79PCh. 21 - -D-Glucose, a hemiacetal, can be converted to a...Ch. 21 - 21.81 Draw a stepwise mechanism for the following...Ch. 21 - Prob. 21.82PCh. 21 - 21.83 Draw a stepwise mechanism f or the...Ch. 21 - Prob. 21.84PCh. 21 - Prob. 21.85PCh. 21 - 21.86 Draw stepwise mechanism for the following...
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