Chemistry

The solubility product constant, Ksp, for nickel (II) carbonate, NiCO3, is 1.3 x 10-7 at 25C.
a. Write the balanced chemical equation for this dissolving process

b. Write the equilibrium expression

c. Find the maximum molar concentration of all ions in solution

Please help!

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  1. , Ksp, for nickel (II) carbonate, NiCO3, is 1.3 x 10-7 at 25C.
    a. Write the balanced chemical equation for this dissolving process
    b. Write the equilibrium expression
    c. Find the maximum molar concentration of all ions in solution
    ...............NiCO3(s) + H2O ==> Ni^2+(aq) + [CO3]^2-(aq)
    I...................solid..........(l)............0....................0
    C..................solid(-x)....(l).............x....................x
    E...................solid..........(l).............x....................x
    Ksp = (Ni^2+)[CO3]^2- = 1.3E-7. Substitute from the E line into Ksp expression.
    1.3E-7 = (x)(x) = x^2
    x = sqrt(1.3E-7) = ? M
    So (Ni^2+) = x = [CO3]^2- = approx 3.6E-4 M
    NOTE: I don't know exactly how your prof writes these equations or expressions so you may need to adjust what I wrote to match how your class usually does it. For example I don't usually write H2O in the dissolution process. Also, I show -x for the solid change but solid-x still is a solid.

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    DrBob222
  2. thank you so much!

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