Using suitable chemicals from the box, write balanced chemical equations for the preparation of the following salts: Lead (II) carbonate, Copper (II) chloride, Iron (II) chloride.
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Solution and Explanation
(a) Lead (II) carbonate: (Prepared via double decomposition/precipitation) [ Pb(NO_3)_2 + Na_2CO_3 PbCO_3downarrow + 2NaNO_3 ]
(b) Copper (II) chloride: (Prepared via action of acid on a carbonate) [ CuCO_3 + 2HCl CuCl_2 + H_2O + CO_2uparrow ] (c) Iron (II) chloride: (Prepared via direct synthesis/combination) [ Fe + 2HCl FeCl_2 + H_2uparrow ] Note: Iron reacting with dry Chlorine would produce Iron (III) chloride, so dilute HCl is used for the (II) state.
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