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What must be the pH of a solution that is 0.049 M Fe3+ to just cause Fe(OH)3(s) to precipitate?

  • Chemistry - ,

    Fe(OH)3 ==> Fe^+3 + 3OH^-

    Ksp = (Fe^+3)(OH^-)^3

    Substitute 0.049 for (Fe^+3) and solve for OH^-. Convert to pOH then to pH.

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