Amphoteric hydroxides can simultaneously react with acid and alkali. They exhibit basic oxide properties in reaction with acids and acidic oxides, as well as acidic properties in reaction with basic oxides. Examples of such hydroxides: chromium hydroxide (3) – Cr (OH) 3, iron (3) hydroxide – Fe (OH) 3, copper (2) hydroxide – Cu (OH) 2, zinc (2) hydroxide – Zn (OH) 2
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