Question

In: Chemistry

Find the concentration of Ca2+ and IO-3 in a saturated Ca(IO3)2 solution prepared by adding Ca(IO3)2...

Find the concentration of Ca2+ and IO-3 in a saturated Ca(IO3)2 solution prepared by adding Ca(IO3)2 to a 0.015 M solution of KIO3. Ksp of Ca(IO3)2(s) is 4.4x10-7M3.

Solutions

Expert Solution

             Ca(IO3)2 -------------> Ca^+2 + 2IO3^-1

                                                x              2x

                                                       +0.015                                      

        x             2x+0.015

KSp    = [Ca^+2][IO3^-]^2

4.4*10^-7   = x*(2x+0.015)^2

    x = 0.00139

[Ca^+2]    = x = 0.00139M

[IO3^-]   = 2x+0.015

             =0.01778M


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