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ICSE Class 10 Chemistry Question 9 of 28

Acids, Bases and Salts — Question 24

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24
Question

Question 24

Give balanced equations for the preparation of the following salts –

(a) (i) CuSO4

(ii) NaHSO4

(iii) Na2SO4

(iv) FeSO4

(v) BaSO4

(vi) PbSO4 — using dil. H2SO4

(b) (i) NaHSO4

(ii) CuSO4 — using conc. H2SO4

Answer

(a) Using dil. H2SO4 :

  1. Preparation of CuSO4:
    CuO + H2SO4 ⟶ CuSO4 + H2O
  2. Preparation of NaHSO4:
    NaOH + H2SO4 ⟶ NaHSO4 + H2O
  3. Preparation of Na2SO4:
    Na2CO3 + H2SO4 ⟶ Na2SO4 + H2O + CO2
  4. Preparation of FeSO4:
    Fe + H2SO4 ⟶ FeSO4 + H2
  5. Preparation of BaSO4:
    BaCl2 + H2SO4 ⟶ BaSO4 + 2HCl
  6. Preparation of PbSO4:
    Pb(NO3)2 + H2SO4 ⟶ PbSO4 + 2HNO3

(b) Using conc. H2SO4 :

  1. Preparation of NaHSO4:

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

  1. Preparation of CuSO4:
    CuO + H2SO4 ⟶ CuSO4 + H2O