Organic Chemistry: A Guided Inquiry
2nd Edition
ISBN: 9780618974122
Author: Andrei Straumanis
Publisher: Cengage Learning
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Chapter 5, Problem 12CTQ
Interpretation Introduction
Interpretation: The reason that explains zero possibility for resonance structure of following anion should be determined.
Concept introduction: Lewis structure is a representation of molecules in which dots are shown to represent unshared electrons and lines are shown to represent bonds. These lines and dots represent distribution of electrons in the molecule.
When one single structure is unable to describe all the properties of a single-molecule, a phenomenon called resonance comes into play. This arises when two or more than two Lewis structures are possible for one molecule. All such structures are called resonating structures and have same placement of atoms in them but these have different locations of bond pairs and lone pairs. The resonating structures are inter-convertible with each other. The resultant of all the resonating or contributing structures is called the resonance hybrid.
Rules to form resonance structure are as follows:
1. Use arrow types 1 and 2 for the resonance structure of anions in the movement of negative charge.
2. Use only arrow type 3 to move a positive charge for the resonance structure of cations.
3. The sigma bond should not be broken. Any atom must not move from its place and total number of electrons must be the same in all resonance structures.
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The reaction for obtaining NO2 from NO and O2 has the rate equation: v = k[NO]2[O2]. Indicate which of the following options is correct.(A). This rate equation is inconsistent with the reaction consisting of a single trimolecular step.(B). Since the overall order is 3, the reaction must necessarily have some trimolecular step in its mechanism.(C). A two-step mechanism: 1) NO + NO ⇄ N2O2 (fast); 2) N2O2 + O2 → NO2 + NO2 (slow).(D). The mechanism must necessarily consist of three unimolecular elementary steps with very similar rate constants.
a. What is the eluent used in the column chromatography here (a “silica plug filtration” is essentially a very short column)?
b. The spectroscopy of compound 5b is described in the second half of this excerpt, including 1H-NMR and 13C-NMR (which you will learn about in CHEM 2412L), MS (which you will learn about later in CHEM 2411L) and IR. One of the IR signals is at 3530 cm-1. What functional group does this indicate might be present in compound 5b?
Steps and explanations. Also provide, if possible, ways to adress this kind of problems in general.
Chapter 5 Solutions
Organic Chemistry: A Guided Inquiry
Ch. 5 - Which elements on the periodic table (other than...Ch. 5 - You will not find “hydroxide” in the stockroom,...Ch. 5 - Prob. 3CTQCh. 5 - Prob. 4CTQCh. 5 - Prob. 5CTQCh. 5 - Prob. 6CTQCh. 5 - On which do you expect to have a more intense and...Ch. 5 - Prob. 8CTQCh. 5 - Prob. 9CTQCh. 5 - Prob. 10CTQ
Ch. 5 - Prob. 11CTQCh. 5 - Prob. 12CTQCh. 5 - Prob. 13CTQCh. 5 - Prob. 14CTQCh. 5 - Prob. 15CTQCh. 5 - Prob. 16CTQCh. 5 - For each proposed set of resonance structures: a....Ch. 5 - Consider the polarization of the C=O bond in the...Ch. 5 - The C=O double bond is called a “carbonyl bond.”...Ch. 5 - Prob. 20CTQCh. 5 - Prob. 21CTQCh. 5 - Prob. 22CTQCh. 5 - Prob. 23CTQCh. 5 - Prob. 24CTQCh. 5 - Prob. 25CTQCh. 5 - Prob. 26CTQCh. 5 - Prob. 27CTQCh. 5 - Prob. 28CTQCh. 5 - Prob. 29CTQCh. 5 - Prob. 30CTQCh. 5 - Prob. 31CTQCh. 5 - Confirm that there is no legitimate Lewis...Ch. 5 - Draw all resonance structures of the molecule...Ch. 5 - Prob. 34CTQCh. 5 - Prob. 35CTQCh. 5 - Prob. 36CTQCh. 5 - Occasionally, we will see an ionic compound that...Ch. 5 - Prob. 2ECh. 5 - Prob. 3ECh. 5 - Prob. 4ECh. 5 - Is it possible to draw a resonance structure of...Ch. 5 - Prob. 6ECh. 5 - Prob. 7ECh. 5 - Prob. 8ECh. 5 - Phenol (shown below) has a pKa10 . a. Based on pKa...Ch. 5 - Use curved arrows to show the most likely...Ch. 5 - Prob. 12ECh. 5 - Complete each Lewis structure, draw all important...Ch. 5 - Use curved arrows to show the most likely...Ch. 5 - Construct an explanation for why sulfuric acid is...Ch. 5 - Prob. 16ECh. 5 - Prob. 17ECh. 5 - Prob. 18E
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