Punjab Medical Punjab - MET Solved Paper-2009

  • question_answer
    Which is the strongest acid?

    A) \[{{C}_{2}}{{H}_{6}}\]                    

    B) \[{{C}_{6}}{{H}_{6}}\]

    C) \[CH\equiv CH\]                              

    D) \[C{{H}_{3}}OH\]

    Correct Answer: D

    Solution :

    \[C{{H}_{3}}OH\](methyl alcohol) among the given compounds, has the highest tendency to donate a proton, hence it is the strongest acid.                 \[\underset{methanol}{\mathop{C{{H}_{3}}OH}}\,\underset{\begin{smallmatrix}  methoxide \\  ion \end{smallmatrix}}{\mathop{C{{H}_{3}}{{O}^{-}}}}\,+{{H}^{+}}\]


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