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Solubility problem

  1. Feb 6, 2009 #1
    1. The problem statement, all variables and given/known data
    Given solubility of Ba(NO3)2 is
    34g/100 H20 at 100oC
    5g/100g of H20 AT 0oC
    if one starts with 100g of (BaNO3)2 and make a saturated solution in water at 100oC, and then cooled to 0oC, how much Ba(NO3)2 is crystallised out of solution?
    The resultant crystals carry along with them on surface 4g of H20 per 100g of the crystals.




    2. Relevant equations
    input=output


    3. The attempt at a solution
    Initial the concentrated solution would be 100g/300g H20 if i do not calculate wrongly.
    then how should i proceed?
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Feb 8, 2009 #2

    Borek

    User Avatar

    Staff: Mentor

    You have 100g/300g initially. Once you cool down the solution - amount of water won't change, amount of dissolved salt will. How much salt will be dissolved in 300g of water at 0ºC?
     
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