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Salts may be classified as soluble or insoluble. 

  1. Select from the following list a pair of compounds that can be used to prepare a soluble and an insoluble salt.
    HNO3, Pb(NO3)2, KNO3, BaO, NaCl
    1. Soluble salt
    2. Insoluble salt 
  2. Describe how a soluble salt is obtained from its solution 

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  1.  
    1. HNO3 or BaO
    2. Pb(NO3)and NaCl
  2. Heat/boil to evaporate the mixture to saturation
    Allow to cool
    Filter the residue.
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