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Organic chemistry question (histidine reaction)

  1. Aug 21, 2011 #1
    1. The problem statement, all variables and given/known data

    Histidine is an amino acid. It is not soluble in water but it will dissolve in water when dilute sodium hydroxide is added.

    The question has two parts to it:
    part-a)
    Write an equation for the reaction that occurs between histidine and dilute sodium hydroxide.
    part-b)
    Explain why the solubility of the water changes after the sodium hydroxide is added

    2. Relevant equations
    we are also given the structure of histidine as shown in the link
    http://imageshack.us/photo/my-images/580/histidine1.gif/


    3. The attempt at a solution

    i have no clue with equation work. i managed to get..... C6H9N3O2 + NaOH >
    cannot figure out what the product(s) is/are going to be
    part-b)attempt
    the ph will increase once NaOH is added but i dont see how that has anything to do with solubility. any help would be appreciated, thanks.
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Aug 22, 2011 #2

    Borek

    User Avatar

    Staff: Mentor

    How does an acid react with a base?
     
  4. Aug 23, 2011 #3
    an acid will react with a base to give salt and water

    acid + base = salt +water
    not sure what you mean by that though
     
  5. Aug 23, 2011 #4

    Borek

    User Avatar

    Staff: Mentor

    Histidine is an aminoacid, isn't it?
     
    Last edited: Aug 23, 2011
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