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ICSE Class 10 Chemistry Question 47 of 62

Study of Compounds — Sulphuric Acid — Question 49

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Question

Question 3(2016)

A, B, C and D summarize the properties of sulphuric acid depending on whether it is dilute or concentrated.

A: Typical acid property

B: Non-volatile acid

C: Oxidizing agent

D: Dehydrating agent

Choose the property [A, B, C or D] depending on which is relevant to each of the following:

(i) Preparation of hydrogen chloride gas.

(ii) Preparation of copper sulphate from copper oxide.

(iii) Action of conc. sulphuric acid on sulphur.

Answer

(i) B: Non-volatile acid

NaCl+H2SO4[conc.]→<200°CNaHSO4+HCl\text{NaCl} + \text{H}_2\text{SO}_4 [\text{conc.}]\xrightarrow{\lt 200 \degree\text{C}} \text{NaHSO}_\text{4} + \text{HCl}

(ii) A: Typical acid property

CuO + H2SO4 (conc.) ⟶ CuSO4 + H2O

(iii) C: Oxidizing agent

S + 2H2SO4 (conc.) ⟶ 3SO2 + 2H2O