Solubility Worksheet - Answer Key

 

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  1. Adage used to determine if a solvent will dissolve a solute.

                               “Like Dissolves Like”

    2.  

     

  2. Which solvent, water or carbon tetrachloride, would you choose to dissolve each of the following.

      3.  

    1. KrF2                CCl4

      2.  

    2. SF2                        H2O

      3.  

    3. SO2                       H2O

      4.  

    4. CO2                      CCl4

      5.  

    5. MgF2                   H2O

      6.  

    6. CH2O              H2O

      7.  

    7. CH2CH2             CCl4

     

     

  3. How does an increase in pressure/temperature affect the solubility of the following in a liquid
    1. Solid

      An increased pressure has no effect. 

      2.  

    2. Gas

      An increase in pressure would Increase the solubility of a gas.

     

     

  4. What is the equation for Henry’s Law

    P = kHX          or        P = kHC

      5.  

    1. When is it valid?

      If the solution is dilute and there is no reaction between the solute and solvent.

      2.  

    2. What relationship does it establish?

      The amount of gas dissolved in the solution is directly proportional to the pressure of the gas above the solution.

     

     

  5. Calculate the solubility of N2 in water when the partial pressure of nitrogen above water is 1.10 atm at 0°C.
    (kH  = 962 Latm/mol)

    C = 1.14 x 10-3 mol/L

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