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Question

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

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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 :

Preparation of NaHSO4:

NaCl + H2SO4 [conc.] {\overset{<200^o\ C}{\longrightarrow}}  NaHSO4 + HCl

Preparation of CuSO4:

CuO + H2SO4 ⟶ CuSO4 + H2O

 

💡 Some Related Questions

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The diagram represents the preparation of sodium sulphate salt from dil. H2SO4 acid and sodium hydroxide.

1. Name the apparatus ‘A’.

2. Name the substance ‘X’ placed in ‘A’ and the substance ‘Y’ placed in B.

3. State the reason for conducting the titration using the apparatus ‘A’ and ‘B’.

4. State which solution is transferred to the evaporating dish and evaporated to point of crystallization for obtaining the salt.

5. State why titration is not conducted for the preparation of copper [II] sulphate crystals by neutralization.

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