Questions/P Block elements G15-18/$$Al_{2}O_{3}$$ is a...
Group 16 ElementsP Block elements G15-18

Al2O3Al_{2}O_{3} is amphoteric. Show reactions.

Expert Answer

Acid: Al2O3+6HCl→2[Al(H2O)6]3++6Cl−Al_{2}O_{3} + 6HCl \rightarrow 2[Al(H_{2}O)_{6}]^{3+} + 6Cl^{-}. Base: Al2O3+6NaOH+3H2O→2Na3[Al(OH)6]Al_{2}O_{3} + 6NaOH + 3H_{2}O \rightarrow 2Na_{3}[Al(OH)_{6}].

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