Explain delocalization within the carboxylate ion COO-?
Understand the Problem
The question is asking about the nature of electron delocalization within the carboxylate ion (COO-). Specifically, it wants you to identify the correct description of the bonding and electron distribution within the carboxylate group, focusing on whether the electrons are localized or delocalized and the types of bonds involved.
Answer
In the carboxylate ion (COO-), the negative charge is delocalized across both oxygen atoms, stabilizing the ion.
In the carboxylate ion (COO-), the negative charge is delocalized across both oxygen atoms. This means neither oxygen atom carries the full negative charge; instead, it's distributed between them. This charge delocalization stabilizes the carboxylate ion.
Answer for screen readers
In the carboxylate ion (COO-), the negative charge is delocalized across both oxygen atoms. This means neither oxygen atom carries the full negative charge; instead, it's distributed between them. This charge delocalization stabilizes the carboxylate ion.
More Information
The carboxylate ion's stability due to delocalization is a key reason why carboxylic acids are more acidic than alcohols.
Tips
A common mistake is thinking the negative charge resides solely on one oxygen atom. It's crucial to remember it's distributed across both.
Sources
- 20.2: Structure and Properties of Carboxylic Acids - chem.libretexts.org
- Carboxylate Ion - (Organic Chemistry) - Fiveable - library.fiveable.me
- Charge Delocalization - (Organic Chemistry) - Fiveable - library.fiveable.me
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