Question

Write the equation for the reaction to prepare lead sulphate from lead carbonate

Answer 1

Answer:

The direct reaction of lead carbonate (insoluble solid) with H2SO4 results in the formation of another insoluble solid, lead sulphate. Hence, this leads to a build up of an unreactive layer of lead sulphate on the solid of lead carbonate. We circumvent this by using nitric acid, which forms a soluble lead nitrate salt

Pbco3 + H2so4 ----- pbso4 + salt.

Answer 2

Answer:

Lead(II) sulphate is prepared by treating lead oxide, hydroxide or carbonate with warm sulphuric acid, or by treating a soluble lead salt with sulphuric acid. Alternatively, it can be produced by the interaction of solutions of lead nitrate and sodium sulphate.

PbCO3 +2HNO3---->Pb(NO3)2 +H2O+CO2

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