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Finding solubility, given pH and Ksp?

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How can i find the solubility of Co(OH)2 if the pH=6.014 and Ksp=10 x 10^-16?

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  1. first of all you have to write the equation

    Co(OH)2---->Co2+ + 2OH-

    Ksp=[Co2+][OH-]^2

    pH + pOH=14 pOH=7.986=-log[OH-]

    from here you can find the solubility

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