Organic Chemistry
11th Edition
ISBN: 9781118133576
Author: T. W. Graham Solomons, Craig Fryhle
Publisher: Wiley, John & Sons, Incorporated
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Textbook Question
Chapter 1, Problem 56P
There are two contributing resonance structures for an anion called acetaldehyde enolate, whose condensed molecular formula is
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Compare these two structures.
[0=C=N] [0=C—N:
Determine whether the two represent resonance contributors of a single species or depict different substances. If two structures are not resonance contributors,
explain why. Select the single best answer.
O The two structures are resonance contributors of the same species.
The two structures are not resonance contributors because they contain different numbers of electrons.
The two structures are not resonance contributors because they contain different bond orders.
O The two structures are not resonance contributors because they contain bond orders having integer values.
The two structures are not resonance contributors because each structure is present in its most stable (lowest
energy) configuration.
The two structures are not resonance contributors because they have different arrangements of atoms.
X
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The structure of Vitamin C (ascorbic acid) is shown below. As the name indicates, the molecule is somewhat acidic. Actually, one of the hydrogens on the four OH groups is much more acidic than the other three ones. Which one is the acidic hydrogen?
Hints: To find the answer, you will again have to draw some resonance structures of the product formed after loss of H+. Consider the product after the loss of H+ for each of the OH groups. Only two of the OH groups have resonance structures after deprotonation; one of these two groups has a much better resonance structure than the other one (again after deprotonation). Note that the oxygen atom that is part of the five-membered ring has nothing to do with the problem.
In the following pair, determine whether the two represent resonance contributors of a single species or
depict different substances. If two structures are not resonance contributors, explain why. Select the
single best answer.
:N-N=N: and :N-N=N:
The two structures are resonance contributors of the same species.
The two structures are not resonance contributors because they contain different numbers of
electrons.
The two structures are not resonance contributors because they contain different bond
orders.
The two structures are not resonance contributors because they contain bond orders having
integer values.
The two structures are not resonance contributors because each structure is present in its
most stable (lowest energy) configuration.
Chapter 1 Solutions
Organic Chemistry
Ch. 1 - Prob. 1PPCh. 1 - Prob. 2PPCh. 1 - Prob. 3PPCh. 1 - Prob. 4PPCh. 1 - Prob. 5PPCh. 1 - Prob. 6PPCh. 1 - Prob. 7PPCh. 1 - Prob. 8PPCh. 1 - Prob. 9PPCh. 1 - Prob. 10PP
Ch. 1 - Prob. 11PPCh. 1 - Prob. 12PPCh. 1 - Prob. 13PPCh. 1 - Prob. 14PPCh. 1 - Prob. 15PPCh. 1 - Prob. 16PPCh. 1 - Prob. 17PPCh. 1 - Prob. 18PPCh. 1 - Prob. 19PPCh. 1 - Prob. 20PPCh. 1 - Prob. 21PPCh. 1 - Practice Problem 1.22 Which of the following...Ch. 1 - Prob. 23PPCh. 1 - Prob. 24PPCh. 1 - Practice Problem 1.25
What do the bond angles of...Ch. 1 - Prob. 26PPCh. 1 - Practice Problem 1.27
Use VSEPR theory to predict...Ch. 1 - Practice Problem 1.28 Predict the bond angles of...Ch. 1 - 1.29 Which of the following ions possess the...Ch. 1 - 1.30 Write a Lewis structure for each of the...Ch. 1 - Prob. 31PCh. 1 - Add any unshared electrons to give each element an...Ch. 1 - Prob. 33PCh. 1 - What is the molecular formula for each of the...Ch. 1 - Prob. 35PCh. 1 - Prob. 36PCh. 1 - 1.37 Write bond-line formulas for all of the...Ch. 1 - Prob. 38PCh. 1 - Prob. 39PCh. 1 - Prob. 40PCh. 1 - Prob. 41PCh. 1 - (a) Cyanic acid (HOCN) and isocyanic acid (HN=C=O)...Ch. 1 - Consider a chemical species (either a molecule or...Ch. 1 - 1.44 Consider a chemical species like the one in...Ch. 1 - 1.45 Consider another chemical species like the...Ch. 1 - Draw a three-dimensional orbital representation...Ch. 1 - Ozone (O3) is found in the upper atmosphere where...Ch. 1 - Write resonance structures for the azide ion, N3....Ch. 1 - Write structural formulas of the type indicated:...Ch. 1 - Prob. 50PCh. 1 - 1.51 In Chapter 15 we shall learn how the...Ch. 1 - Prob. 52PCh. 1 - (a) Consider a carbon atom in its ground state....Ch. 1 - Open computer molecular models for dimethyl ether,...Ch. 1 - Boron is a group IIIA element. Open the molecular...Ch. 1 - 1.56 There are two contributing resonance...Ch. 1 - Prob. 1LGPCh. 1 - Consider the compound with the following condensed...Ch. 1 - Consider the compound with the following condensed...Ch. 1 - Consider the compound with the following condensed...Ch. 1 - Consider the compound with the following condensed...Ch. 1 - Consider the compound with the following condensed...Ch. 1 - Prob. 7LGPCh. 1 - Prob. 8LGP
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