Chemistry

What pH is required to start precipitation of Fe(OH)3 from a 0.380 M solution of FeCl3? Ksp of Fe(OH)3 = 4.0e-29.

  1. 👍
  2. 👎
  3. 👁
  1. Fe(OH)3(s) ==> Fe^+3 + 3OH^-
    Ksp = (Fe^+3)(OH^-)^3 = 4.0E-29
    (OH^-) = cube root(4E-29/Fe^+3)
    (OH^-) = 4.68E-10
    Convert that to H^+ and to pH. I get 4.67 for pH.
    I have ignored any contribution to the acidity made by the hydrolysis of the FeCl3.

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. someones GOTTA help me with this science...!!!

    1. Which of the following describes the correct sequence of events during the water cycle? (1 point)precipitation ¨ condensation ¨ evaporation ¨ runoff condensation ¨ precipitation ¨ runoff ¨ evaporation runoff

  2. Chemistry

    What is the maximum mass(g) of KCL that can be added to 1.00L of a 0.0100 M lead(ii) chloride solution without causing any precipitation of PbCl2? Assume the additional KCl does not affect the volume of the solution. For, PbCl2,

  3. science

    The solubility products of AgCl and 𝐴𝑔3𝑃𝑂4 are 1.6 × 10−10 and 1.8 × 10−18, respectively. If 𝐴𝑔+ is added (without changing the volume) to 1.00 L of a solution containing 0.10 mol 𝐶𝑙− and 0.10 mol

  4. Chemistry

    The problem ask what is the mass of iron(iii) chloride contains 2.35 x 10^23 chloride ions. I understand the molar mass is 162.20 g/mol. - 2.35 x 10^23 chloride ions would be around 0.39 moles. - The work that my teacher gave me

  1. Chemistry

    A solution contains 0.022 M Ag and 0.033 M Pb2 . If you add Cl–, AgCl and PbCl2 will begin to precipitate. What is the concentration of Cl– required, in molarity, when A. AgCl precipitation begins? B. AgCl precipitation is

  2. Math

    George gathered samples for the average monthly precipitation, in inches, for two cities and recorded the results in the box-and-whisker plots shown. What conclusion can you make from the box-and-whisker plots? A. The median

  3. Chemistry

    A solution contains 0.0500 M Ca2 (aq) and 0.0350 M Ag (aq). What will be the concentration of Ca2 (aq) when Ag2SO4(s) begins to precipitate? What percentage of the Ca2 (aq) can be separated from the Ag (aq) by selective

  4. chemistry

    Calculate the minimum number of moles of Pb(NO3)2 required to start precipitation in 50.0mL of 0.15M ZnI2

  1. chemistry

    A salt solution can be acidic, basic, or neutral. when dissolved in water, which of the following salts will make the solution basic: KCl, FeCl3, NaNO3, CaCO3, LiF, and NH4Br?

  2. Chemistry

    The Cu2+ ion can be separated from Ag+, Ca2+, and K+ in aqueous solution by 1. precipitation of Cu2+ as Cu(OH)2(s) with 6 M NaOH(aq). 2. precipitation of Ag+, Ca2+, and K+ as the carbonates. 3. None of these procedures will

  3. Help with a chemistry reaction

    2Fe + 3Cl2 -> 2FeCl3 How much FeCl3 can you produce with 10g of Fe and how much Cl2 will be consumed? The chain of thought in my head is, first calculate the amount of mol in Fe, done by taking the mass over the molarmass

  4. chemistry

    Which is most acidic in its aqueous solution? a)FeCl3 b)AlCl3 c)NiCl3 d)BeCl2

You can view more similar questions or ask a new question.