Chemistry
Give a balanced equation for the preparation of the following salts:
(a) Copper [II] sulphate from copper [II] oxide.
(b) Iron [III] chloride from the metal iron.
(c) Lead sulphate from lead carbonate.
(d) Potassium sulphate from KOH solution.
(e) Lead [II] chloride from lead carbonate [give two equations].
(f) Sodium sulphate — using dilute sulphuric acid.
(g) Copper chloride — using copper carbonate.
Acids Bases Salts
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Answer
(a) CuO + H2SO4 ⟶ CuSO4 + H2O
(b) 2Fe + 3Cl2 ⟶ 2FeCl3
(c) PbCO3 + 2HNO3 ⟶ Pb(NO3)2 + H2O + CO2
Pb(NO3)2 + Na2SO4 ⟶ 2NaNO3 + PbSO4
(d) 2KOH + H2SO4 [dil.] ⟶ K2SO4 + 2H2O
(e) PbCO3 + 2HNO3 ⟶ Pb(NO3)2 + H2O + CO2 ↑
Pb(NO3)2 + 2NaCl ⟶ 2NaNO3 + PbCl2
(f) Na2CO3 + H2SO4(dil.) ⟶ Na2SO4 + H2O + CO2
(g) CuCO3 + 2HCl (dil) ⟶ CuCl2 + H2O + CO2
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