ICSE Class 10 Chemistry
Question 10 of 28
Acids, Bases and Salts — Question 25
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Question Question 25
Starting from insoluble ZnO how would you obtain insoluble ZnCO3 by precipitation.
ZnO + 2HCl ⟶ ZnCl2 + H2O
ZnCl2 + Na2CO3 ⟶ ZnCO3 + 2NaCl
Dissolve zinc oxide in dil. HCl. Add to it a saturated solution of Na2CO3. The precipitate formed by the interchange of radicals is filtered. It is dried to obtain the zinc carbonate.