BCECE Medical BCECE Medical Solved Papers-2007

  • question_answer
    An acid solution of 0.005 M has a pH of 5. The degree of ionisation of acid is

    A)  \[0.1\times {{10}^{-2}}\]

    B)  \[0.2\times {{10}^{-2}}\]

    C)  \[0.5\times {{10}^{-4}}\]

    D)  \[0.6\times {{10}^{-6}}\]

    Correct Answer: B

    Solution :

    Acid, \[[{{H}^{+}}]={{10}^{-pH}}={{10}^{-5}}\] \[\alpha =\frac{actual\text{ }ionisation}{molar\text{ }concentration}=\frac{{{10}^{-5}}}{0.005}=0.2\times {{10}^{-2}}\]


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