Chemistry 5070 · O Level · Preparation of salts

Preparation of salts — practice question

Pure lead(II) sulfate is made by combining two substances, X and Y. Once the reaction has finished, the mixture is filtered, and pure lead(II) sulfate is collected. Which row shows the best method for preparing pure lead(II) sulfate?

  • Aaqueous lead(II) nitrate + aqueous sodium sulfate; crystallise the filtrate
  • Baqueous lead(II) nitrate + aqueous sodium sulfate; wash and dry the residue
  • Csolid lead(II) carbonate + dilute sulfuric acid; crystallise the filtrate
  • Dsolid lead(II) carbonate + dilute sulfuric acid; wash and dry the residue

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