Organic Chem reaction question

zzandroo

New Member
Oct 19, 2012
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  1. Pre-Medical
    So you know it has to be base-catalyzed hydrolysis. Carbonate has a -2 charge, which will create hydroxide molecules.

    Then it's a standard base-catalyzed addition-elimination rxn where the hydroxide displaces the alkoxide (leaving group).

    I'm a little confused because I'm not used to seeing +2 charges used as a base. Its supposed to create a salt, but I can't seem to relate where the calcium will bind. I'm too used to seeing base hydrolysis with sodium.
     
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    zzandroo

    New Member
    Oct 19, 2012
    3
    0
    1. Pre-Medical
      CaCo3 (s) ---- some dissociation ----> Ca^2+ (aq) + (CO_3)^2- (aq)

      As with all salts, there is some degree of solvation of water. How much depends on the molar solubility of the salt in question.

      can you help me with this question?
      Write an equation describing the hydrolysis of one ester group in tannins by CaCO3
       
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