Ch.12 Alcohols, Thiols, Ethers, Aldehydes, and Ketones

Timberlake - Chemistry: An Introduction to General, Organic, and Biological Chemistry 13th Edition

Timberlake13th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9780134421353Not the one you use?Change textbook

Timberlake 13th Edition

Ch.12 Alcohols, Thiols, Ethers, Aldehydes, and Ketones

Problem 15c

Chapter 12, Problem 15c

Identify each of the following compounds as an aldehyde or a ketone:
c.

Verified step by step guidance

Step 1: Understand the structural difference between aldehydes and ketones. Aldehydes have a carbonyl group (C=O) bonded to at least one hydrogen atom, while ketones have a carbonyl group bonded to two carbon atoms.

Step 2: Examine the structure of the compound in the provided image. Locate the carbonyl group (C=O) in the molecule.

Step 3: Determine the atoms directly bonded to the carbonyl carbon. Check if one of the bonds is to a hydrogen atom (indicating an aldehyde) or if both bonds are to carbon atoms (indicating a ketone).

Step 4: If the carbonyl carbon is bonded to a hydrogen atom, classify the compound as an aldehyde. If it is bonded to two carbon atoms, classify it as a ketone.

Step 5: Based on the analysis, identify the compound as either an aldehyde or a ketone and ensure the classification aligns with the structural features observed.

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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. This functional group is bonded to at least one hydrogen atom, which distinguishes aldehydes from ketones. Common examples include formaldehyde and acetaldehyde, and they typically have distinctive odors and are used in various chemical reactions.

Ketones

Ketones are organic compounds that contain a carbonyl group (C=O) located within the carbon chain, meaning it is flanked by two carbon atoms. This structural feature differentiates ketones from aldehydes. Acetone and butanone are common examples of ketones, and they are often used as solvents and in the production of various chemicals.

Functional Groups

Functional groups are specific groups of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules. In the context of aldehydes and ketones, the carbonyl group is the key functional group that defines their chemical behavior and properties. Understanding functional groups is essential for identifying and classifying organic compounds.

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