Textbook Question
Suggest possible molecular formulas for a compound that has a molecular ion with an m/z value of 86.
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Ch. 13 - Mass Spectrometry; Infrared Spectroscopy; UV/Vis Spectroscopy
Bruice8th EditionOrganic ChemistryISBN: 9780135213711
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Table of contents
- Ch. 1 - Remembering General Chemistry: Electronic Structure and Bonding (Part 1)31
- Ch. 1 - Remembering General Chemistry: Electronic Structure and Bonding (Part 2)65
- Ch. 2 - Acids and Bases: Central to Understanding Organic Chemistry84
- Ch. 3 - An Introduction to Organic Compounds:Nomenclature, Physical Properties, and Structure183
- Ch. 4 - Isomers: The Arrangement of Atoms in Space121
- Ch. 5 - Alkenes: Structure, Nomenclature, and an Introduction to Reactivity • Thermodynamics and Kinetics83
- Ch. 6 - The Reactions of Alkenes • The Stereochemistry of Addition Reactions175
- Ch. 7 - The Reactions of Alkynes • An Introduction to Multistep Synthesis119
- Ch. 8 - Delocalized Electrons: Their Effect on Stability, pKa, and the Products of a Reaction • Aromaticity and Electronic Effects: An Introduction to the Reactions of Benzene148
- Ch. 9 - Substitution and Elimination Reactions of Alkyl Halides212
- Ch. 10 - Reactions of Alcohols, Ethers, Epoxides, Amines, and Sulfur-Containing Compounds131
- Ch. 11 - Organometallic Compounds60
- Ch. 12 - Radicals90
- Ch. 13 - Mass Spectrometry; Infrared Spectroscopy; UV/Vis Spectroscopy62
- Ch. 14 - NMR Spectroscopy95
- Ch. 15 - Reactions of Carboxylic Acids and Carboxylic Acid Derivatives123
- Ch. 16 - Reactions of Aldehydes and Ketones • More Reactions of Carboxylic Acid Derivatives141
- Ch. 17 - Reactions at the Alpha-Carbon101
- Ch. 18 - Reactions of Benzene and Substituted Benzenes144
- Ch. 19 - More About Amines • Reactions of Heterocyclic Compounds49
- Ch. 20 - The Organic Chemistry of Carbohydrates80
- Ch. 21 - Amino Acids, Peptides, and Proteins57
- Ch. 22 - Catalysis in Organic Reactions and in Enzymatic Reactions35
- Ch. 23 - The Organic Chemistry of the Coenzymes—Compounds Derived from Vitamins1
- Ch. 28 - Pericyclic Reactions58
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Bruice 8th EditionCh. 13 - Mass Spectrometry; Infrared Spectroscopy; UV/Vis SpectroscopyProblem 6b
Bruice 8th EditionCh. 13 - Mass Spectrometry; Infrared Spectroscopy; UV/Vis SpectroscopyProblem 6bChapter 14, Problem 6b
Can one of the possible molecular formulas contain a nitrogen atom?
Verified step by step guidance1
Step 1: Recall the general rules for determining molecular formulas. A molecular formula represents the actual number of atoms of each element in a molecule. It must satisfy the rules of valency and the octet rule for all atoms involved.
Step 2: Consider the presence of nitrogen in a molecule. Nitrogen typically forms three covalent bonds and has one lone pair of electrons, following its valency of 3. This is important when determining if a molecular formula can include nitrogen.
Step 3: Analyze the molecular formula in question (if provided) or the context of the problem. Check if the inclusion of nitrogen would allow the molecule to satisfy the octet rule for all atoms and maintain a valid structure.
Step 4: Verify the molecular formula's consistency with the rules of stoichiometry and the presence of nitrogen. For example, if the molecular formula includes nitrogen, ensure that the total number of bonds and atoms aligns with the expected structure.
Step 5: Conclude whether a nitrogen atom can be included in the molecular formula based on the above analysis. If the molecular formula can accommodate nitrogen while satisfying all chemical rules, then it is possible for nitrogen to be part of the molecule.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Molecular Formula
A molecular formula represents the number and types of atoms in a molecule. It is expressed using chemical symbols and subscripts, indicating how many of each atom are present. Understanding molecular formulas is crucial for determining the composition of a compound and predicting its properties.
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Nitrogen in Organic Compounds
Nitrogen is a common element in organic chemistry, often found in amines, amides, and other functional groups. Its presence can significantly affect the reactivity and properties of organic molecules. Recognizing how nitrogen can be incorporated into molecular formulas is essential for understanding the diversity of organic compounds.
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Valency and Bonding
Valency refers to the ability of an atom to bond with other atoms, determined by the number of electrons in its outer shell. Nitrogen typically has a valency of three, allowing it to form three covalent bonds. This concept is fundamental for constructing molecular formulas and understanding how different atoms, including nitrogen, can combine in organic molecules.
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Related Practice
Textbook Question
Identify the hydrocarbon that has a molecular ion with an m/z value of 128, a base peak with an m/z value of 43, and significant peaks with m/z values of 57, 71, and 85.
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Textbook Question
Can a high-resolution mass spectrometer distinguish between them?
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Textbook Question
Predict the relative intensities of the molecular ion peak, the M+2 peak, and the M+4 peak for a compound that contains two bromine atoms.
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Textbook Question
What is the most likely m/z value for the base peak in the mass spectrum of 3-methylpentane?
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Textbook Question
Determine the molecular formula for each of the following:
b. a compound that contains C, H, and one O and has a molecular ion with an m/z value of 100
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