Which gas is produced when dilute hydrochloric acid is added to a reactive metal? Write the chemical reaction when iron reacts with dilute H2SO4.

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Chapter 3

NCERT

Class 10

Science

Solutions

4. Which gas is produced when dilute hydrochloric acid is added to a reactive metal? Write the chemical reaction when iron reacts with dilute H2SO4.

Question:

Which gas is produced when dilute hydrochloric acid is added to a reactive metal? Write the chemical reaction when iron reacts with dilute H₂SO₄.

Answer:

When dilute hydrochloric acid is added to a reactive metal, the hydrogen gas is formed.
When dilute hydrochloric acid reacts with a reactive metal (alkali or earth alkali), hydrogen gas is formed.

Reaction of iron (Fe) with dilute sulphuric acid (H₂SO₄₎

Fe(s) + H₂SO₄ (aq) → FeSO₄ (aq) + H₂ ↑(g)

Iron + dil. Sulphuric acid → Ferrous sulphate + Hydrogen gas (released)