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NEET AIPMT SOLVED PAPER 2003

  • question_answer
                    Which one of the following compounds is not a protonic acid?                                                

    A)                 \[SO{{(OH)}_{2}}\]

    B)                 \[S{{O}_{2}}{{(OH)}_{2}}\]

    C) *              \[B{{(OH)}_{3}}\]

    D)                 \[PO{{(OH)}_{3}}\]

    Correct Answer: C

    Solution :

                    \[B{{(OH)}_{3}}\] is not protonic acid because it does not give proton on ionisation directly while its acts as Lewis acid due to acceptance of \[O{{H}^{-}}\] from water and forms a hydrated species.                   \[B{{(OH)}_{3}}+{{H}_{2}}O\xrightarrow[{}]{{}}{{[B{{(OH)}_{4}}]}^{-}}+{{H}^{+}}\]


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