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# What are amphoteric oxides?

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## Amphoteric oxidesAmphoteric molecules are those substances that act as acids as well as bases. It depicts that these molecules are able to donate and accept ${\mathrm{H}}^{+}$ ions.Example of amphoteric oxidesAluminum oxide$\left({\mathrm{Al}}_{2}{\mathrm{O}}_{3}\right)$ reacts in the following manner with acids and bases as follows:-The reaction of Aluminum oxide with acid that is hydrochloric acid $\left(\mathrm{HCl}\right)$ is as follows:- ${\mathrm{Al}}_{2}{\mathrm{O}}_{3}\left(\mathrm{s}\right)+6\mathrm{HCl}\left(\mathrm{aq}\right)\to 2{\mathrm{AlCl}}_{3}\left(\mathrm{aq}\right)+3{\mathrm{H}}_{2}\mathrm{O}\left(\mathrm{l}\right)\phantom{\rule{0ex}{0ex}}\mathrm{Aluminum}\mathrm{oxide}\mathrm{Hydrogen}\mathrm{chloride}\mathrm{Aluminum}\mathrm{chloride}\mathrm{Water}$The reaction of Aluminum oxide with the base that is sodium hydroxide $\left(\text{NaOH}\right)$ is as follows:- ${\mathrm{Al}}_{2}{\mathrm{O}}_{3}\left(\mathrm{s}\right)+2\mathrm{NaOH}\left(\mathrm{aq}\right)\to 2{\mathrm{NaAlO}}_{2}\left(\mathrm{aq}\right)+{\mathrm{H}}_{2}\mathrm{O}\left(\mathrm{l}\right)\phantom{\rule{0ex}{0ex}}\mathrm{Aluminum}\mathrm{oxide}\mathrm{Sodium}\mathrm{hydroxide}\mathrm{Sodium}\mathrm{aluminate}\mathrm{Water}$

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