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Chemistry - Quinizarin + NaOH

  1. Oct 1, 2011 #1
  2. jcsd
  3. Oct 2, 2011 #2

    Borek

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    Staff: Mentor

    What about quinizarin acidity?
     
  4. Oct 2, 2011 #3
  5. Oct 2, 2011 #4

    Borek

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    Staff: Mentor

    Not very acidic, still a weak acid - mixed with a strong base.
     
  6. Oct 2, 2011 #5
    If it's a strong base, it will accept protons.

    So, the OH groups will deprotonate?
     
  7. Oct 2, 2011 #6

    Borek

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    Staff: Mentor

    Producing salt.

    Note - no idea what is the second pKa, so it is better to not be so sure both groups will be deprotonated.
     
  8. Oct 2, 2011 #7
    Oh, so you think just one group would deprotonate?
     
  9. Oct 2, 2011 #8

    Borek

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    Staff: Mentor

    Depends on pH.
     
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