Study of Compounds — Sulphuric Acid — Question 8

(a) Acidic nature

1. Mg + H₂SO₄ (dil.) ⟶ MgSO₄ + H₂ ↑
2. Zn + H₂SO₄ (dil.) ⟶ ZnSO₄ + H₂ ↑

(b) Oxidising agent

1. C + 2H₂SO₄ ⟶ CO₂ + 2H₂O + 2SO₂ ↑
2. Zn + 2H₂SO₄ ⟶ ZnSO₄ + 2H₂O + SO₂ ↑

(c) Dehydrating Nature

1. $\text{HCOOH} \xrightarrow{\text{Conc. H}_2\text{SO}_4} \text{CO} + \text{H}_2\text{O}$
2. $\underset{\text{ ethyl alcohol}}{\text{C}_2\text{H}_5\text{OH}} \xrightarrow[170\degree\text{C}]{\text{Conc. H}_2\text{SO}_4\text{[excess]}} \underset{ \text{ethene}}{\text{C}_2\text{H}_4} ↑ + \text{H}_2\text{O}$

(d) Non-volatile Nature

1. NaCl + H₂SO₄ ⟶ NaHSO₄ + HCl
2. KCl + H₂SO₄ ⟶ KHSO₄ + HCl