Textbook Question
Using condensed structural formulas, or line-angle formulas if cyclic, write the balanced chemical equations for the (1) reaction of each of the following amines with water and (2) neutralization with HCl:
c. aniline
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Ch.14 Carboxylic Acids, Esters, Amines, and Amides
Timberlake14thChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249
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Table of contents
- Ch.1 Chemistry in Our Lives19
- Ch.2 Chemistry and Measurements80
- Ch.3 Matter and Energy53
- Ch.4 Atoms and Elements58
- Ch.5 Nuclear Chemistry42
- Ch.6 Ionic and Molecular Compounds57
- Ch.7 Chemical Quantities and Reactions38
- Ch.8 Gases30
- Ch.9 Solutions50
- Ch.10 Acids and Bases and Equilibrium64
- Ch.11 Introduction to Organic Chemistry: Hydrocarbons77
- Ch.12 Alcohols, Thiols, Ethers, Aldehydes, and Ketones82
- Ch.13 Carbohydrates54
- Ch.14 Carboxylic Acids, Esters, Amines, and Amides91
- Ch.15 Lipids61
- Ch.16 Amino Acids, Proteins, and Enzymes84
- Ch.17 Nucleic Acids and Protein Synthesis86
- Ch.18 Metabolic Pathways and ATP Production73
Timberlake14thChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249Not the one you use?Change textbook
Chapter 14, Problem 38c
Using condensed structural formulas, or line-angle formulas if cyclic, write the balanced chemical equations for the (1) reaction of each of the following amines with water and (2) neutralization with HBr:
c. N-methylaniline
Verified step by step guidance1
Step 1: Understand the structure of N-methylaniline. N-methylaniline is an aromatic amine where a methyl group (-CH₃) is attached to the nitrogen atom of an aniline molecule (C₆H₅NH₂). Its condensed structural formula is C₆H₅NHCH₃.
Step 2: Write the reaction of N-methylaniline with water. Amines are weak bases and react with water to form an ammonium ion and hydroxide ion. Represent the reaction as: C₆H₅NHCH₃ + H₂O ⇌ C₆H₅NH₂CH₃⁺ + OH⁻.
Step 3: Balance the chemical equation for the reaction with water. Ensure that the number of atoms of each element is the same on both sides of the equation. In this case, the equation is already balanced.
Step 4: Write the neutralization reaction of N-methylaniline with HBr. Amines react with strong acids like HBr to form an ammonium salt. Represent the reaction as: C₆H₅NHCH₃ + HBr → C₆H₅NH₂CH₃⁺Br⁻.
Step 5: Balance the chemical equation for the neutralization reaction. Verify that the number of atoms and charges are balanced on both sides of the equation. In this case, the equation is already balanced.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Condensed Structural Formulas
Condensed structural formulas provide a simplified representation of a molecule, showing the arrangement of atoms and the connectivity between them without depicting all the bonds explicitly. For example, in the case of amines, the formula indicates the presence of nitrogen and its attached groups, which is crucial for understanding their reactivity with water and acids.
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Condensed Formula Concept 1
Neutralization Reaction
A neutralization reaction occurs when an acid reacts with a base to produce water and a salt. In the context of amines, which can act as weak bases, the reaction with a strong acid like HBr results in the formation of an ammonium salt. This concept is essential for writing the balanced equation for the neutralization of N-methylaniline with HBr.
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Line-Angle Formulas
Line-angle formulas, also known as skeletal formulas, are a shorthand way of representing organic molecules where vertices represent carbon atoms and lines represent bonds. This method is particularly useful for cyclic compounds and helps in visualizing the structure of amines like N-methylaniline, facilitating the understanding of their reactions with water and acids.
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Related Practice
Textbook Question
Using condensed structural formulas, or line-angle formulas if cyclic, write the balanced chemical equations for the (1) reaction of each of the following amines with water and (2) neutralization with HBr:
b. propylamine
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Textbook Question
Using condensed structural formulas, or line-angle formulas if cyclic, write the balanced chemical equations for the (1) reaction of each of the following amines with water and (2) neutralization with HBr:
c. N-methylaniline
26
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Textbook Question
Draw the condensed structural or line-angle formula for the amide formed in each of the following reactions:
a.
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Textbook Question
Draw the condensed structural or line-angle formula for the amide formed in each of the following reactions:
c.
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Textbook Question
Draw the condensed structural or line-angle formula for the amide formed in each of the following reactions:
c.
614
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