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#Question id: 376


Phosphoric acid is tribasic, with pKa of 2.14, 6.86 and 12.4. The ionic form that predominates at pH 3.2 is

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. H3PO4

  2. H2PO4–

  3. HPO42–

  4. PO43–


Answer:- Option(s): 2


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