Uttarakhand PMT Uttarakhand PMT Solved Paper-2007

  • question_answer
    Acetic acid exists in benzene solution in the dimeric form. In an actual experiment the vant Hoff factor was found to be 0.52. Then the degree of dissociation of acetic acid is

    A)  0.48           

    B)  0.88

    C)  0.96           

    D)  0.52

    Correct Answer: C

    Solution :

     \[\underset{\begin{smallmatrix}  \,\,\,1 \\  1-\alpha  \end{smallmatrix}}{\mathop{2C{{H}_{3}}COOH}}\,\underset{\begin{smallmatrix}  0 \\  \alpha /2 \end{smallmatrix}}{\mathop{{{(C{{H}_{3}}COOH)}_{2}}}}\,\] \[i=1-\frac{\alpha }{2}\] or        \[\alpha =2(1-i)\] \[=2(1-0.52)\] \[=0.96\]


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