Rucete ✏ Chemistry In a Nutshell
1. What Are Amphoteric Substances?
- Amphoteric substances are compounds that can act as both acids and bases, depending on the chemical environment.
- This means they can either donate or accept a proton (H⁺), or react with acids and bases alike.
2. Behavior
- With an acid → act as a base
- With a base → act as an acid
- This dual behavior makes them unique and useful in acid-base chemistry and buffer systems.
3. Common Examples
- Metal hydroxides that are amphoteric:
- Al(OH)₃ — aluminum hydroxide
- Be(OH)₂ — beryllium hydroxide
- Cr(OH)₃ — chromium(III) hydroxide
- Zn(OH)₂ — zinc hydroxide
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Chemistry in a nutshell