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Question

Name the gas produced when aluminium foil reacts with :

(a) dilute hydrochloric acid.

(b) sodium hydroxide solution.

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Solution

Hydrogen gas is formed in both reactions

(a) When aluminium foil reacts with dilute hydrochloric acid, aluminum chloride and hydrogen gas is formed.

2Al(s)+6HCl(l)2AlCl3+3H2(g)

(b) When aluminium foil reacts with sodium hydroxide solution in an aqueous solution of it, then sodium aluminate and hydrogen gas is produced.

Al(s)+NaOH(aq)+H2O(l)NaAlO2(s)+H2(g)


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