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.
Promo GIF

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)

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