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Question

Write equations for the laboratory preparation of the following salts, using sulphuric acid:
(i) iron (II) sulphate from the iron.
(ii) copper sulphate from copper.
(iii) lead sulphate from lead nitrate.
(iv) sodium sulphate from sodium carbonate.

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Solution

(i) Iron (II) sulphate is prepared in the displacement reaction that takes place between iron and dilute sulphuric acid.

Fe + dil. H2SO4 FeSO4 + H2Iron Sulphuric acid Iron (II) sulphate Hydrogen

(ii) Copper sulphate is prepared in the reaction that takes between copper oxide and dilute sulphuric acid.

CuO + dil. H2SO4 CuSO4 + H2O

(iii) Lead sulphate is prepared by treating lead nitrate with dilute sulphuric acid.

Pb(NO3)2 + dil. H2SO4 PbSO4 + 2HNO3

(iv) Sodium sulphate is prepared by the neutralisation of soluble sodium carbonate base with dilute sulphuric acid.

Na2CO3 + H2SO4 Na2SO4 + H2O + CO2

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