AIIMS AIIMS Solved Paper-2011

  • question_answer
    Which of the following is not a conjugate acid-base pair?

    A)  \[HPO_{3}^{2-},PO_{3}^{3-}\]                  

    B)  \[{{H}_{2}}PO_{4}^{-},HPO_{4}^{2-}\]

    C)         \[{{H}_{2}}PO_{4}^{-},{{H}_{3}}P{{O}_{4}}\]

    D)        \[{{H}_{2}}PO_{4}^{-},{{H}_{3}}PO_{3}^{3-}\]

    Correct Answer: D

    Solution :

    \[Aci{{d}_{1}}+Bas{{e}_{2}}Aci{{d}_{2}}+Bas{{e}_{1}}\] \[HPO_{3}^{2-}+{{H}_{2}}O{{H}_{3}}{{O}^{+}}+PO_{3}^{3-}\] \[{{H}_{2}}PO_{4}^{-}+{{H}_{2}}O{{H}_{3}}{{O}^{+}}+HPO_{4}^{2-}\] \[{{H}_{3}}P{{O}_{4}}+{{H}_{2}}O{{H}_{3}}{{O}^{+}}+{{H}_{2}}PO_{4}^{2-}\]


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