Write reactions to justify the amphoteric nature of aluminium.
(N/A) substance is called amphoteric if it displays characteristics of both acids and bases. Aluminium dissolves in both acids and bases,showing amphoteric behaviour.
$(i)$ $2Al_{(s)} + 6HCl_{(aq)} \to 2AlCl_{3(aq)} + 3H_{2(g)}$
(ii) $2Al_{(s)} + 2NaOH_{(aq)} + 6H_2O_{(l)} \to 2Na[Al(OH)_4]_{(aq)} + 3H_{2(g)}$
$(i)$ $2Al_{(s)} + 6HCl_{(aq)} \to 2AlCl_{3(aq)} + 3H_{2(g)}$
(ii) $2Al_{(s)} + 2NaOH_{(aq)} + 6H_2O_{(l)} \to 2Na[Al(OH)_4]_{(aq)} + 3H_{2(g)}$
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