17.4 Solubility and Ksp

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    Ksp and Molar Solubility

    Ksp is the equilibrium constant for an ionic solid dissociating into ions in water.
    The molar solubility is the molar concentration of the solid that dissolves/dissociates in water. It is also equal to ‘x’ in an ICE table.

     

     

    What is the molar solubility of AgCl? (Ksp = 1.8×10-10)

     

     

     

     

    What is the molar solubility of Ag2S? (Ksp = 6.0×10-51)

     

     

     

     

    The molar solubility of BiI3 is 1.32×10-5M. Calculate Ksp.

    Which of the following salts has the highest solubility in water?
    a)   AgCl
    b)   AgBr
    c)   AgI
    d)   Ag2S
    e)   Co(OH)2

    Ksp
    AgCl 1.8×10-10
    AgBr 5.0×10-13
    AgI 8.3×10-17
    Ag2S 6.0×10-51
    Co(OH)2 1.3×10-15