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March 27, 2017

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100g of a saturated solution of KNO3 was cooled from 80 degrees to 50 degrees. What mass of KNO3 would be expected to crystallise out of the solution?

  • Chemistry - ,

    Few people memorize solubility tables. Surely you have a graph or table giving the solubility of KNO3 vs temperature. If you will post the solubility in those tables/graph at 80 C and 50 C I can show you how to do this.

  • Chemistry - ,

    KNO3 solubility at 80 C is 180g/100g
    KNO3 solubility at 50 C is 78g/100g

  • Chemistry - ,

    kCl at 40 degrees

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