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Homework Help: PH Adjustments

  1. Sep 16, 2008 #1
    I have a slurry at pH 2. How much CaO must I add to adjust pH to 9.5
    Slurry is in H2SO4 medium
  2. jcsd
  3. Sep 16, 2008 #2


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    Staff: Mentor

    pH 2 gives you initial concentration of sulfuric acid, pH 9.5 gives you information about excess CaO that have to be added...
  4. Sep 16, 2008 #3


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    Homework Helper
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    Start by calculate concentration of H2SO4 using the given pH, and use simple stoichiometry to find how much CaO; then add some excess until pH 9 (calculating this theoretically I'm not sure). Should be easy in practice.
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