Question

Explain how you can obtain solid sodium carbonate from amixture of lead(ii)carbonate and sodium carbonate

Answer 1

PbCO3 is not soluble in water. Na2CO3 is soluble in water; therefore, add water, swirl to dissolve, filter. The PbCO3 will be held back in the filter paper. Evaporate the solvent in the filtrate to recover the Na2CO3.