Skip to main content
Ch.22 - Organic Chemistry
Chapter 22, Problem 75a

Name each aldehyde or ketone. a.

Verified step by step guidance
1
Identify the functional group present in the compound. Aldehydes have the functional group \(-CHO\) at the end of the carbon chain, while ketones have the \(C=O\) group within the carbon chain.
Determine the longest carbon chain that contains the carbonyl group. This will form the base name of the compound.
Number the carbon chain starting from the end nearest to the carbonyl group. This ensures the carbonyl carbon gets the lowest possible number.
For aldehydes, replace the '-e' ending of the corresponding alkane name with '-al'. For ketones, replace the '-e' ending with '-one'.
If there are any substituents or branches, name them and indicate their position on the carbon chain using the numbering established in step 3.

Verified Solution

Video duration:
2m
This video solution was recommended by our tutors as helpful for the problem above.
Was this helpful?

Key Concepts

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

Aldehydes

Aldehydes are organic compounds characterized by the presence of a carbonyl group (C=O) at the end of a carbon chain. The general formula for aldehydes is RCHO, where R represents a hydrocarbon group. Common examples include formaldehyde (HCHO) and acetaldehyde (CH3CHO). Naming aldehydes involves identifying the longest carbon chain containing the carbonyl group and using the suffix '-al'.
Recommended video:
Guided course
00:54
Rules for Naming Aldehydes

Ketones

Ketones are organic compounds that contain a carbonyl group (C=O) located within a carbon chain, rather than at the end. The general formula for ketones is RC(=O)R', where R and R' are hydrocarbon groups. Common examples include acetone (CH3COCH3) and butanone (C4H8O). Ketones are named by identifying the longest carbon chain that includes the carbonyl group and using the suffix '-one'.
Recommended video:
Guided course
00:39
Rules for Naming Ketones

Nomenclature of Organic Compounds

The nomenclature of organic compounds follows specific rules set by the International Union of Pure and Applied Chemistry (IUPAC). This system provides a standardized way to name compounds based on their structure, functional groups, and the length of the carbon chain. For aldehydes and ketones, the position of the carbonyl group and the presence of other functional groups are crucial for determining the correct name and ensuring clarity in communication among chemists.
Recommended video:
Guided course
02:26
Introduction to Organic Chemistry