Question

18) Give Reason: “Aluminium with Nitric acid does not produce hydrogen
gas.​

Answer 1

Answer:

b

Explanation:

because nitric acid HNO3 is strong oxidising agent

Answer 2

Aluminum with nitric acid does not produce hydrogen gas because H₂ produced during the reaction is oxidized to H₂O.

• When nitric acid reacts with aluminum a reddish-brown gas is evolved.
• Usually when an acid reacts with a metal, hydrogen gas is evolved.
• But in the case of nitric acid, the hydrogen gas is oxidized to form water.
• This is due to the fact that nitric acid is a very strong oxidizing agent.
• Nitric acid itself gets reduced to NO₂.
• The reaction is as follows:

        Al + 6 HNO₃   →  Al(NO₃)₃ + 3NO₂ + 3 H₂O