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

15. Aldehydes and Ketones

Naming Aldehydes

GOB Chemistry

15. Aldehydes and Ketones

Naming Aldehydes

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Problem 35b

Textbook Question

The following names are incorrect. What is wrong with each?
b. 2-Butanal

Verified step by step guidance

Identify the functional group in the compound. The suffix '-al' indicates that the compound is an aldehyde, which means it contains a carbonyl group (C=O) at the end of the carbon chain.

Recall the naming rule for aldehydes: the carbonyl carbon in an aldehyde is always assigned position 1 in the chain. This means that the position number for the aldehyde group should not be included in the name.

Analyze the given name '2-Butanal'. The '2-' suggests that the carbonyl group is on the second carbon, which is incorrect because aldehydes always have the carbonyl group on the first carbon.

Correct the name by removing the position number for the aldehyde group. The correct name for this compound is simply 'Butanal', as the aldehyde group is implied to be on the first carbon.

Double-check the structure of the compound to ensure that the name matches the correct IUPAC naming conventions for aldehydes.

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Key Concepts

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

IUPAC Nomenclature

IUPAC nomenclature is a systematic method for naming organic chemical compounds. It provides rules for naming compounds based on their structure, functional groups, and the longest carbon chain. Understanding these rules is essential for identifying errors in chemical names, such as incorrect prefixes or suffixes.

Functional Groups

Functional groups are specific groups of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules. In the case of 2-butanal, recognizing the aldehyde functional group (-CHO) is crucial for determining if the name accurately reflects the compound's structure and properties.

Structural Isomerism

Structural isomerism occurs when compounds have the same molecular formula but different structural arrangements of atoms. In the context of 2-butanal, it is important to consider whether the name correctly indicates the position of the functional group and the carbon chain, as misnaming can lead to confusion with other isomers.