ORGANIC CHEMISTRY II LAB MANUAL>CUSTOM<
9th Edition
ISBN: 9780534261641
Author: SIMEK
Publisher: Cengage Learning
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Chapter 20.10, Problem 20.16P
The mechanism of the Fischer esterification was controversial until 1938, when Irving Roberts and Harold Urey of Columbia University used isotopic labeling to follow the alcohol oxygen atom through the reaction. A catalytic amount of sulfuric acid was added to a mixture of 1 mole of acetic acid and 1 mole of special methanol containing the heavy 18O isotope of oxygen. After a short period, the acid was neutralized to stop the reaction, and the components of the mixture were separated.
- a. Propose a mechanism for this reaction.
- b. Follow the labeled 18O atom through your mechanism, and show where it is found in the products.
- c. The 18O isotope is not radioactive. Suggest how you could experimentally determine the amounts of 18O in the separated components of the mixture.
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Please help me to figure this out. I got 24 is that correct? Please step by step help.
The initial rates method can be used to
determine the rate law for a reaction.
using the data for the reaction below, what is
the rate law for reaction?
A+B-C
-
ALA]
At
(mot
Trial [A] (mol)
(MD
2
1
0.075
[B](
0.075
mo
LS
01350
2
0.075
0.090 0.1944
3
0.090 0.075
0.1350
Report value of k with two significant Figure
Compare trials 1 and 2 where [B] is
constant.
The rate law can be written as: rate
= k[A][B]".
rate2
0.090
= 9.
rate1
0.010
[A]m
6.0m
= 3m
[A] m
2.0m
Chapter 20 Solutions
ORGANIC CHEMISTRY II LAB MANUAL>CUSTOM<
Ch. 20.2C - Prob. 20.1PCh. 20.2C - Name the following carboxylic acids (when...Ch. 20.4B - Rank the compounds in each set in order of...Ch. 20.5 - Prob. 20.4PCh. 20.5 - Phenols are less acidic than carboxylic acids,...Ch. 20.5 - Prob. 20.6PCh. 20.7A - Prob. 20.7PCh. 20.7B - Prob. 20.8PCh. 20.7D - Draw all four resonance forms of the fragment at...Ch. 20.7D - a. Why do most long-chain fatty acids show a large...
Ch. 20.10 - Prob. 20.13PCh. 20.10 - A carboxylic acid has two oxygen atoms, each with...Ch. 20.10 - Prob. 20.15PCh. 20.10 - The mechanism of the Fischer esterification was...Ch. 20.10 - Prob. 20.17PCh. 20.12 - Show how to synthesize the following compounds,...Ch. 20.13 - Show how you would synthesize the following...Ch. 20.14 - Prob. 20.20PCh. 20.14 - Prob. 20.21PCh. 20.15 - Propose a mechanism for the reaction of benzoic...Ch. 20.15 - Prob. 20.23PCh. 20.15 - Prob. 20.24PCh. 20 - Prob. 20.25SPCh. 20 - Give both IUPAC names and common names for the...Ch. 20 - Draw the structures of the following compounds. a....Ch. 20 - Prob. 20.28SPCh. 20 - Arrange each group of compounds in order of...Ch. 20 - Predict the products (if any) of the following...Ch. 20 - Rank the following isomers in order of increasing...Ch. 20 - Prob. 20.32SPCh. 20 - What do the following pKa values tell you about...Ch. 20 - Given the structure of ascorbic acid (vitamin C):...Ch. 20 - Prob. 20.35SPCh. 20 - Show how you would accomplish the following...Ch. 20 - Predict the products and propose mechanisms for...Ch. 20 - Prob. 20.38SPCh. 20 - Prob. 20.39SPCh. 20 - Prob. 20.40SPCh. 20 - Prob. 20.44SPCh. 20 - Prob. 20.45SPCh. 20 - Predict the major form of each compound when it is...
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