Question

Write notes on the properties of acids.

Answer 1

1. They have sour taste.
2. Their aqueous solutions conduct electricity since they contain ions
3. Acids turn blue litmus red.
4. Acids react with active metals to give hydrogen gas.
   Mg + H₂SO₄ → MgSO₄ + H ₂↑
   Zn + 2HCl → ZnCl₂ + H₂↑
5. Acids react with metal carbonate and metal hydrogen carbonate to give carbon dioxide.
   Na₂CO₃ + 2HCl → 2NaCl + H₂O + CO₂↑
   NaHCO₃ + HCl → NaCl + H₂O + CO₂↑
6. Acids react with metallic oxides to give salt and water.
   CaO + H₂SO₄ → CaSO₄+ H₂O
7. Acids react with bases to give salt and water.
   HCl + NaOH → NaCl + H₂O.