Table of contents

1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

17. Amines

Amine Reactions

GOB Chemistry

17. Amines

Amine Reactions

Previous problemNext problem

4:11 minutes

Problem 37c

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

Verified step by step guidance

Step 1: Understand the problem. Aniline is an aromatic amine with the chemical formula \( \text{C}_6\text{H}_5\text{NH}_2 \). The problem asks for two reactions: (1) the reaction of aniline with water and (2) the neutralization reaction of aniline with hydrochloric acid (HCl).

Step 2: Write the reaction of aniline with water. Amines are weak bases and react with water to accept a proton (H\(^+\)) from water, forming the conjugate acid and hydroxide ions (OH\(^-\)). The reaction can be written as: \( \text{C}_6\text{H}_5\text{NH}_2 + \text{H}_2\text{O} \rightarrow \text{C}_6\text{H}_5\text{NH}_3^+ + \text{OH}^- \).

Step 3: Write the neutralization reaction of aniline with HCl. In this reaction, aniline reacts with HCl to form its conjugate acid (anilinium ion) and chloride ion (Cl\(^-\)). The reaction can be written as: \( \text{C}_6\text{H}_5\text{NH}_2 + \text{HCl} \rightarrow \text{C}_6\text{H}_5\text{NH}_3^+ + \text{Cl}^- \).

Step 4: Verify that both reactions are balanced. For the reaction with water, ensure that the number of atoms and charges are balanced on both sides of the equation. Similarly, for the neutralization reaction, confirm that the number of atoms and charges are balanced.

Step 5: Summarize the key concepts. The reaction of aniline with water demonstrates its basicity, while the neutralization reaction with HCl shows how it forms a salt (anilinium chloride). These reactions highlight the behavior of amines as weak bases in aqueous solutions.

Verified video answer for a similar problem:

This video solution was recommended by our tutors as helpful for the problem above

Video duration:

Play a video:

Was this helpful?

Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Amines

Amines are organic compounds derived from ammonia (NH3) by replacing one or more hydrogen atoms with alkyl or aryl groups. They can act as bases due to the presence of a lone pair of electrons on the nitrogen atom, allowing them to accept protons (H+) from acids. Understanding the structure and properties of amines is crucial for predicting their reactivity in chemical reactions.

Acid-Base Reactions

Acid-base reactions involve the transfer of protons (H+) between reactants. In the context of amines, they can react with water to form an ammonium ion and hydroxide ion, demonstrating their basic nature. Additionally, when amines neutralize with hydrochloric acid (HCl), they form an ammonium chloride salt, which is a key aspect of their reactivity and applications in organic chemistry.

Balanced Chemical Equations

A balanced chemical equation represents a chemical reaction with equal numbers of each type of atom on both sides of the equation, adhering to the law of conservation of mass. Balancing equations is essential for accurately depicting the stoichiometry of reactions, which is important for predicting the amounts of reactants and products involved. This skill is fundamental in chemistry, especially when dealing with reactions involving amines and acids.

Watch next

Master Acid-Base Reaction Concept 1 with a bite sized video explanation from Jules

Start learning