Name three classes of substances, which react with an acid to form sal

1.	Name three classes of substances, which react with an acid to form salts. Write equations to describe their reactions with suitable acids.
Answer» Three different classes of substances are a metal, a base and a metallic carbonate, which react with an acid to form salts. (i) Zinc, a metal reacts with dilute sulphuric acid to form zinc sulphate and hydrogen gas is liberated. Zn + H₂SO₄ → ZnSO₄ + H₂ (ii) Sodium hydroxide, a base reacts with dilute nitric acid to form sodium nitrate and water. NaOH + HNO₃ → NaNO₃ + H₂O (iii) Magnesium carbonate a metallic carbonate reacts with dilute hydrochloric acid to form magnesium chloride, water and carbon dioxide gas is liberated.

Name three classes of substances, which react with an acid to form salts. Write equations to describe their reactions with suitable acids.

Answer»

Three different classes of substances are a metal, a base and a metallic carbonate, which react with an acid to form salts.

(i) Zinc, a metal reacts with dilute sulphuric acid to form zinc sulphate and hydrogen gas is liberated.

Zn + H₂SO₄ → ZnSO₄ + H₂

(ii) Sodium hydroxide, a base reacts with dilute nitric acid to form sodium nitrate and water.

NaOH + HNO₃ → NaNO₃ + H₂O

(iii) Magnesium carbonate a metallic carbonate reacts with dilute hydrochloric acid to form magnesium chloride, water and carbon dioxide gas is liberated.

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