NEET Chemistry Concepts of Acids & Bases NEET PYQ-Concepts Of Acids Bases

  • question_answer
    Which one is the correct order of acidity?                                                                     [NEET-2017]

    A)  \[C{{H}_{3}}=C{{H}_{3}}>C{{H}_{2}}=C{{H}_{2}}>C{{H}_{3}}-C\]\[=CH>CH=CH\]

    B)  \[C{{H}_{2}}=C{{H}_{2}}>C{{H}_{3}}-CH=C{{H}_{2}}>C{{H}_{3}}-C\]\[\equiv CH>CH\equiv CH\]

    C)  \[CH\equiv CH>C{{H}_{3}}-C\equiv CH>C{{H}_{2}}\]\[=C{{H}_{2}}>C{{H}_{3}}-C{{H}_{3}}\]

    D)  \[CH\equiv CH>C{{H}_{2}}=C{{H}_{2}}>C{{H}_{3}}-C\]\[\equiv CH>C{{H}_{3}}-C{{H}_{3}}\]

    Correct Answer: D

    Solution :

    [d] Correct order is
    \[\underset{\begin{smallmatrix}  (Two\,acidic \\  hydrogens) \end{smallmatrix}}{\mathop{H-C\equiv C-H>}}\,\underset{\begin{smallmatrix}  (One\,acidic \\  hydrogen) \end{smallmatrix}}{\mathop{{{H}_{3}}C-C\equivC-H>}}\,{{H}_{2}}C=C{{H}_{2}}\]\[>C{{H}_{3}}-C{{H}_{3}}\]


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