Asked by Chemistry Confused
What must be the pH of a solution that is 0.049 M Fe3+ to just cause Fe(OH)3(s) to precipitate?
Answers
Answered by
DrBob222
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.
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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