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Name the gas produced when aluminium foil reacts with: (a) dilute hydrochloric acid. (b) Sodium Hydroxide solution. |
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Answer» When aluminium foil reacts with sodium hydroxide, sodium aluminate is formed. Metals react with dilute acids to form metallic salts and hydrogen gas. For example: Aluminium foil reacts with dilute hydrochloric acid to produce aluminium chloride and hydrogen gas. The balanced chemical equation for the reaction is: 2Al(s) + 6HCl(aq) 2AlCl3(aq) + 3H2(g). Aluminium is an amphoteric metal. It reacts with both acids and bases. The reaction is highly exothermic and produces a lot of heat. There is rapid evolution of hydrogen gas during this reaction. |
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