Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Acid-Base Properties

  1. Nov 10, 2008 #1
    How do i find the pH of FeSO4(s), knowing that its concentration is 0.10mol/L
    it is a salt.. and it was placed in distilled water..

    FeSO4---->< Fe+2 + SO4-2

    SO4-2 is the conjugate base of a strong acid H2SO4- therefore SO4-2 has no effect on the pH

    in this case what is Fe+2,would be an acid and the Ka is equla to 1.8*10^-7
    then i would combine Fe with h2o
    and then what will the equation be?
    Last edited: Nov 10, 2008
  2. jcsd
  3. Nov 11, 2008 #2


    User Avatar

    Staff: Mentor

    SO42- will hydrolize slightly - giving HSO4-, raising pH.

    Fe(OH)2 is weekly soluble, so it may lower pH.

    Finding exact answer may be a little bit tricky.
    Last edited: Nov 11, 2008
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook