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    The following substances were all dissolved in 100 grams of water at 290 K to produce saturated solutions. If the solution is heated to 310 K, which substance will have a decrease in its solubility.
    a. NaCl
    b. KI
    c. CaCl2
    d. HCl
    e. KNO3

    What does an increase in temperature tend to do for solubility, I only know Henry's Law but thats only for Gas molecules
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    (Original post by ChemBoy1)
    The following substances were all dissolved in 100 grams of water at 290 K to produce saturated solutions. If the solution is heated to 310 K, which substance will have a decrease in its solubility.
    a. NaCl
    b. KI
    c. CaCl2
    d. HCl
    e. KNO3

    What does an increase in temperature tend to do for solubility, I only know Henry's Law but thats only for Gas molecules
    The majority of solutes become more soluble with increasing temperature as dissolving is typically endothermic, therefore an increase in temperature favours the solution.

    Gases are the common counterexample to this, they get less soluble with increasing temperature as this increases their kinetic energy, making it harder to maintain the intermolecular forces between the solute and the solvent.

    Where are you getting these questions from? :p:
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    (Original post by ChemBoy1)
    The following substances were all dissolved in 100 grams of water at 290 K to produce saturated solutions. If the solution is heated to 310 K, which substance will have a decrease in its solubility.
    a. NaCl
    b. KI
    c. CaCl2
    d. HCl
    e. KNO3

    What does an increase in temperature tend to do for solubility, I only know Henry's Law but thats only for Gas molecules
    only one of the compounds in your list is a gas ...
 
 
 
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