Question

Which metal liberate hydrogen gas on reaction with both acids and bases ?

Answer 1

First of all it cannot be sodium as because sodium itself from a base with hydrogen so the actual answer will be Zn (zinc) which forms zinc chloride on reaction with an acid like hydrochloric acid and sodium zincate on reaction with a base like sodium hydroxide .

Answer 2

Zinc metal liberates hydrogen gas on reaction with both acids and bases.

• Metals that are more reactive than hydrogen in the reactivity series and displace hydrogen from their compound are considered to be more reactive than hydrogen.
• Amphoteric metals are those that have the ability to react with both acids and bases.
• Zinc (Zn) and aluminium (Al) are two examples of such metals (Al).
• Zinc can produce hydrogen gas when it reacts with a strong acid like HCl.
• Zinc also produces hydrogen when it reacts with the base NaOH.