Textbook Question
Write the balanced chemical equations for the (1) reaction of each of the following amines with water and (2) neutralization with HCl:
c. aniline
Ch.14 Carboxylic Acids, Esters, Amines, and Amides
Timberlake13th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9780134421353
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Table of contents
- Ch.1 Chemistry in Our Lives11
- Ch.2 Chemistry and Measurements80
- Ch.3 Matter and Energy54
- Ch.4 Atoms and Elements51
- Ch.5 Nuclear Chemistry42
- Ch.6 Ionic and Molecular Compounds57
- Ch.7 Chemical Quantities and Reactions41
- Ch.8 Gases29
- Ch.9 Solutions51
- Ch.10 Acids and Bases and Equilibrium65
- Ch.11 Introduction to Organic Chemistry: Hydrocarbons78
- Ch.12 Alcohols, Thiols, Ethers, Aldehydes, and Ketones83
- Ch.13 Carbohydrates54
- Ch.14 Carboxylic Acids, Esters, Amines, and Amides90
- Ch.15 Lipids61
- Ch.16 Amino Acids, Proteins, and Enzymes84
- Ch.17 Nucleic Acids and Protein Synthesis83
- Ch.18 Metabolic Pathways and ATP Production67
Timberlake13th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9780134421353Not the one you use?Change textbook
Chapter 14, Problem 38b
Write the balanced chemical equations for the (1) reaction of each of the following amines with water and (2) neutralization with HBr:
b. propylamine
Verified step by step guidance1
Step 1: Understand the problem. Propylamine (C₃H₇NH₂) is a primary amine. When it reacts with water, it acts as a weak base, accepting a proton (H⁺) from water to form its conjugate acid and hydroxide ions (OH⁻). In the neutralization reaction with HBr, the amine reacts with the acid to form an ammonium salt.
Step 2: Write the reaction of propylamine with water. The general reaction for an amine (RNH₂) with water is: RNH₂ + H₂O ⇌ RNH₃⁺ + OH⁻. For propylamine, substitute R with C₃H₇: C₃H₇NH₂ + H₂O ⇌ C₃H₇NH₃⁺ + OH⁻.
Step 3: Balance the reaction of propylamine with water. Ensure that the number of atoms on both sides of the equation is equal. In this case, the equation is already balanced as written: C₃H₇NH₂ + H₂O ⇌ C₃H₇NH₃⁺ + OH⁻.
Step 4: Write the neutralization reaction of propylamine with HBr. The general reaction for an amine (RNH₂) with a strong acid (HX) is: RNH₂ + HX → RNH₃⁺X⁻. For propylamine, substitute R with C₃H₇ and X with Br: C₃H₇NH₂ + HBr → C₃H₇NH₃⁺Br⁻.
Step 5: Balance the neutralization reaction. Ensure that the number of atoms and charges are balanced. In this case, the equation is already balanced as written: C₃H₇NH₂ + HBr → C₃H₇NH₃⁺Br⁻.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Balanced Chemical Equations
A balanced chemical equation represents a chemical reaction where the number of atoms for each element is the same on both sides of the equation. This is crucial for adhering to the law of conservation of mass. Balancing involves adjusting coefficients to ensure that reactants and products have equal numbers of each type of atom.
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Balancing Chemical Equations (Simplified) Concept 1
Amines and Their Reactions
Amines are organic compounds derived from ammonia by replacing one or more hydrogen atoms with alkyl or aryl groups. They can act as bases, reacting with water to form ammonium ions and hydroxide ions. Understanding the behavior of amines in aqueous solutions is essential for predicting their reactions with acids like HBr.
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Neutralization Reactions
Neutralization reactions occur when an acid reacts with a base to produce water and a salt. In the case of amines, when they react with strong acids like HBr, they form an ammonium salt. This concept is fundamental in understanding how amines behave in acidic environments and the products formed from such reactions.
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Related Practice
Textbook Question
Indicate if each of the following is soluble in water. Explain.
d.
Textbook Question
Indicate if each of the following is soluble in water. Explain.
c.
1
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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.
Textbook Question
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
Textbook Question
Draw the condensed structural or line-angle formula for the amide formed in each of the following reactions:
c.