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

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1:42 minutes

Problem 69a

Textbook Question

Draw the condensed structural or line-angle formulas for the products of the following:
a. CH₃–CH₂–NH₂ + H₂O ⇌

Verified step by step guidance

Identify the type of reaction: This is an acid-base reaction where the amine group (CH₃―CH₂―NH₂) acts as a base and water (H₂O) acts as an acid.

Determine the role of each reactant: The lone pair of electrons on the nitrogen atom in CH₃―CH₂―NH₂ allows it to accept a proton (H⁺) from water, forming an ammonium ion.

Write the product of the reaction: When CH₃―CH₂―NH₂ accepts a proton, it forms CH₃―CH₂―NH₃⁺ (ethylammonium ion). Water, after donating a proton, becomes OH⁻ (hydroxide ion).

Express the equilibrium: The reaction is reversible, so the products are CH₃―CH₂―NH₃⁺ and OH⁻, and the equilibrium can be written as CH₃―CH₂―NH₂ + H₂O ⇌ CH₃―CH₂―NH₃⁺ + OH⁻.

Draw the condensed structural or line-angle formulas: Represent CH₃―CH₂―NH₂ as a condensed structure, and for the products, show CH₃―CH₂―NH₃⁺ (ethylammonium ion) and OH⁻ (hydroxide ion) in their respective forms.

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Key Concepts

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

Condensed Structural Formula

A condensed structural formula is a way of representing a chemical compound that shows the arrangement of atoms and the connectivity between them without depicting all the bonds explicitly. It typically groups atoms together to indicate how they are bonded, making it easier to visualize the structure of organic molecules. For example, CH₃―CH₂―NH₂ indicates a chain of carbon atoms with attached functional groups.

Line-Angle Formula

The line-angle formula, also known as the skeletal formula, is a simplified representation of organic molecules where vertices represent carbon atoms and lines represent bonds. This method omits hydrogen atoms attached to carbons, making it easier to visualize complex structures. It is particularly useful for depicting larger molecules and their functional groups in a clear and concise manner.

Acid-Base Reaction

An acid-base reaction involves the transfer of protons (H⁺ ions) between reactants, leading to the formation of new products. In the context of the given question, the amine (CH₃―CH₂―NH₂) can act as a base, while water (H₂O) can act as an acid, resulting in the formation of an ammonium ion and hydroxide ion. Understanding this concept is crucial for predicting the products of the reaction.

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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

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Textbook Question

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

Indicate if each of the following is soluble in water. Explain.

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Textbook Question

Indicate if each of the following is soluble in water. Explain.

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Textbook Question

Novocain, a local anesthetic, is the ammonium salt of procaine.

b. Why is procaine hydrochloride used rather than procaine?

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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 HCl:

c. aniline

c. N-methylaniline

b. propylamine