Some properties of sulphuric acid are listed below. Choose the property A, B, C or D which is responsible for the reaction (a) to (e). Some properties may be repeated.
A. Acid
B. Dehydrating agent
C. Non-volatile acid
D. Oxidizing agent
(a) C₁₂H₂₂O₁₁ + nH₂SO₄ $\overset{}{\to}$ 12C + 11H₂O + nH₂SO₄
(b) S + 2H₂SO₄ $\overset{}{\to}$ 3SO₂ + 2H₂O
(c) NaCl + 2H₂SO₄ $\overset{}{\to}$ NaHSO₄ + HCl
(d) CuO + 2H₂SO₄ $\overset{}{\to}$ CuSO₄ + H₂O
(e) Na2CO₃ + H₂SO₄ $\overset{}{\to}$ Na₂SO₄ + H₂O + CO₂

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Solution

Reactions Properties

(a) C₁₂H₂₂O₁₁ + nH₂SO₄ $\overset{}{\to}$ 12C + 11H₂O + nH₂SO₄ B. Dehydrating agent

(b) S + 2H₂SO₄ $\overset{}{\to}$ 3SO₂ + 2H₂O D. Oxidising agent

(c) NaCl + H₂SO₄ $\overset{}{\to}$ NaHSO₄ + HCl C. Non-volatile acid

(d) CuO + H₂SO₄ $\overset{}{\to}$ CuSO₄ + H₂O A. Acid

(e) Na₂CO₃ + H₂SO₄ $\overset{}{\to}$ Na₂SO₄ + H₂O + CO₂ A. Acid

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Reactions	Properties
(a) C₁₂H₂₂O₁₁ + nH₂SO₄ $\overset{}{\to}$ 12C + 11H₂O + nH₂SO₄	B. Dehydrating agent
(b) S + 2H₂SO₄ $\overset{}{\to}$ 3SO₂ + 2H₂O	D. Oxidising agent
(c) NaCl + H₂SO₄ $\overset{}{\to}$ NaHSO₄ + HCl	C. Non-volatile acid
(d) CuO + H₂SO₄ $\overset{}{\to}$ CuSO₄ + H₂O	A. Acid
(e) Na₂CO₃ + H₂SO₄ $\overset{}{\to}$ Na₂SO₄ + H₂O + CO₂	A. Acid

Reactions Properties (a) C12H22O11 + nH2SO4 → 12C + 11H2O + nH2SO4 B. Dehydrating agent (b) S + 2H2SO4 → 3SO2 + 2H2O D. Oxidising agent (c) NaCl + H2SO4 → NaHSO4 + HCl C. Non-volatile acid (d) CuO + H2SO4 → CuSO4 + H2O A. Acid (e) Na2CO3 + H2SO4 → Na2SO4 + H2O + CO2 A. Acid