Domanda del libro di testo
Name the following compounds:
a.
b.
c.
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Ch.14 Some Compounds with Oxygen, Sulfur, or a Halogen
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187
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TOC.tableOfContents
- Ch.1 Matter and Measurements27
- Ch.2 Atoms and the Periodic Table20
- Ch.3 Ionic Compounds8
- Ch.4 Molecular Compounds23
- Ch.5 Classification & Balancing of Chemical Reactions12
- Ch.6 Chemical Reactions: Mole and Mass Relationships28
- Ch.7 Chemical Reactions: Energy, Rate and Equilibrium64
- Ch.8 Gases, Liquids and Solids24
- Ch.9 Solutions52
- Ch.10 Acids and Bases25
- Ch.11 Nuclear Chemistry22
- Ch.12 Introduction to Organic Chemistry: Alkanes57
- Ch.13 Alkenes, Alkynes, and Aromatic Compounds47
- Ch.14 Some Compounds with Oxygen, Sulfur, or a Halogen50
- Ch.15 Aldehydes and Ketones45
- Ch.16 Amines42
- Ch.17 Carboxylic Acids and Their Derivatives57
- Ch.18 Amino Acids and Proteins82
- Ch.19 Enzymes and Vitamins63
- Ch.20 Carbohydrates44
- Ch.21 The Generation of Biochemical Energy65
- Ch.22 Carbohydrate Metabolism45
- Ch.23 Lipids42
- Ch.24 Lipid Metabolism33
- Ch.25 Protein and Amino Acid Metabolism24
- Ch.26 Nucleic Acids and Protein Synthesis45
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187Non è quello che usi tu?Cambia libro di testo
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McMurry 8th EditionCh.14 Some Compounds with Oxygen, Sulfur, or a HalogenProblema 19
McMurry 8th EditionCh.14 Some Compounds with Oxygen, Sulfur, or a HalogenProblema 19Capitolo 14, Problema 19
2-Aminopropane is an achiral molecule, but 2-aminobutane is chiral. Explain.
Guida verificata passo dopo passo1
Identify the concept of chirality: A molecule is chiral if it has a carbon atom bonded to four different groups, making it non-superimposable on its mirror image. If a molecule lacks this property, it is achiral.
Analyze the structure of 2-aminopropane: The central carbon atom in 2-aminopropane is bonded to a methyl group (-CH3), an amino group (-NH2), a hydrogen atom (-H), and another methyl group (-CH3). Since two of the groups are identical (both are methyl groups), the central carbon does not have four different groups, making the molecule achiral.
Analyze the structure of 2-aminobutane: The central carbon atom in 2-aminobutane is bonded to a methyl group (-CH3), an amino group (-NH2), a hydrogen atom (-H), and an ethyl group (-CH2CH3). Since all four groups are different, the central carbon is a chiral center, making the molecule chiral.
Compare the two molecules: The key difference lies in the groups attached to the central carbon. In 2-aminopropane, the presence of two identical methyl groups prevents chirality, while in 2-aminobutane, the presence of four distinct groups creates a chiral center.
Conclude: 2-Aminopropane is achiral because it lacks a chiral center, while 2-aminobutane is chiral due to the presence of a carbon atom bonded to four different groups.
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Concetti chiave
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Chirality
Chirality refers to the geometric property of a molecule that makes it non-superimposable on its mirror image. A chiral molecule typically has a carbon atom bonded to four different substituents, resulting in two distinct forms known as enantiomers. In contrast, achiral molecules can be superimposed on their mirror images, indicating a lack of this asymmetry.
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1:39
Chirality Example 1
Stereocenters
A stereocenter, often a chiral center, is a specific atom in a molecule, usually carbon, that has four different groups attached to it. The presence of a stereocenter is a key factor in determining whether a molecule is chiral. In the case of 2-aminobutane, the presence of a stereocenter makes it chiral, while 2-aminopropane lacks such a center, rendering it achiral.
Molecular Structure
The molecular structure of a compound refers to the arrangement of atoms within the molecule and the bonds that connect them. This arrangement influences the molecule's properties, including its chirality. For example, 2-aminopropane has a symmetrical structure that does not allow for chirality, while 2-aminobutane's structure introduces asymmetry, leading to its chiral nature.
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00:34Molecular Models Example 1
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Which of the following molecules are chiral? (Hint: Draw each molecule and analyze it as illustrated in Worked Example 14.2.)
a. 3-Chloropentane
b. 2-Chloropentane
c.
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Predict the product of the following reaction:
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What disulfides would you obtain from oxidation of the following thiols?
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Give systematic names for the following alkyl halides:
a.
b.
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