JIPMER Jipmer Medical Solved Paper-2001

  • question_answer
    Self-ionisation of liquid ammonia occurs as \[2N{{H}_{3}}\rightleftharpoons NH_{4}^{+}+NH_{2}^{-};\]                         \[K={{10}^{-10}}\] In this solvent, an acid might be:

    A)  \[NH_{4}^{+}\]

    B)  \[N{{H}_{3}}\]

    C)  any species that will form\[NH_{4}^{+}\]

    D)  all the above

    Correct Answer: A

    Solution :

    \[N{{H}_{3}}+N{{H}_{3}}\,\,\,\,\rightleftharpoons \underset{\begin{smallmatrix}  \text{proton}\,\text{donar} \\  \,\,\,\,\,\,\,\,\,\,\text{(acid)} \end{smallmatrix}}{\mathop{NH_{4}^{+}}}\,+NH_{2}^{-}\] Hence, \[NH_{4}^{+}\] can donate proton and is an acid.


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