Why are cations Lewis acids?
Understand the Problem
The question is asking about the relationship between cations and Lewis acids, specifically why cations qualify as Lewis acids. This involves understanding the definition of Lewis acids, which are substances that can accept an electron pair, and how cations fit into this definition due to their positive charge and ability to attract electron pairs.
Answer
Cations are Lewis acids because they can accept an electron pair.
Cations are Lewis acids because they are electron-deficient species that can accept an electron pair.
Answer for screen readers
Cations are Lewis acids because they are electron-deficient species that can accept an electron pair.
More Information
Cations, such as metal ions, have positive charges that attract electrons, making them capable of accepting electron pairs and thus acting as Lewis acids.
Tips
A common mistake is confusing Lewis acids with Lewis bases. Remember that Lewis acids accept electron pairs, while Lewis bases donate them.
Sources
- Lewis Concept of Acids and Bases - Chemistry LibreTexts - chem.libretexts.org
- Cationic Lewis Acids - .chem.wisc.edu
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