Question

Name the gas produced when aluminium foil reacts with:
(a) dilute hydrochloric acid.
(b) Sodium Hydroxide solution.

Answer 1

Answer:

opt. ( b )

Explanation:

The balanced chemical equation for the reaction is:

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

Metals react with dilute acids to form metallic salts and hydrogen gas. Aluminium is an amphoteric metal. It reacts with both acids and bases. The reaction is highly exothermic, So release large amount of heat. There is rapid evolution of hydrogen gas during this reaction.

Answer 2

Answer: When aluminium foil reacts with dilute hydrochloric acid hydrogen gas is produced.

Explanation:

Since Aluminum foil comes under the division of active metal it readily reacts with hydrochloric acid (HCl) and produces lot of heat and hydrogen gas.

When aluminium foil reacts with Sodium Hydroxide solution hydrogen gas is produced.

Explanation:

Aluminium foil reacts with sodium hydroxide to form sodium aluminate. In general all metals when reacted with dilute acids form metallic salts and produce hydrogen gas.