CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2005

  • question_answer
    The species among the following, which can act as an acid and a base is :

    A)  \[HSO_{4}^{-}\]                              

    B)  \[SO_{4}^{2-}\]

    C)  \[{{H}_{3}}{{O}^{+}}\]                  

    D)  \[C{{l}^{-}}\]

    Correct Answer: A

    Solution :

    The species which can accept as well as donate \[{{H}^{+}}\] can act both as an acid and a base.                 \[\underset{base}{\mathop{HSO_{4}^{-}}}\,+{{H}^{+}}{{H}_{2}}S{{O}_{4}}\]                    \[\underset{acid}{\mathop{HSO_{4}^{-}}}\,SO_{4}^{2-}+{{H}^{+}}\]


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