JEE Main & Advanced Chemistry Equilibrium Question Bank Electrical conductors, Arrhenius theory and ostwald's dilution law

  • question_answer Degree of dissociation of \[0.1\,N\,\,C{{H}_{3}}COOH\] is                 (Dissociation constant \[=1\times {{10}^{-5}}\]) [MP PET 1997]

    A)                 \[{{10}^{-5}}\]  

    B)                 \[{{10}^{-4}}\]

    C)                 \[{{10}^{-3}}\]  

    D)                 \[{{10}^{-2}}\]

    Correct Answer: D

    Solution :

               Degree of dissociation a = ?                    Normality of solution = 0.1 N \[=\frac{1}{10}N\]                    Volume = 10 litre                    Dissociation constant \[K=1\times {{10}^{-5}}\]                                 \[K=\frac{{{\alpha }^{2}}}{V}\]; \[\alpha =\sqrt{KV}\] \[=\sqrt{1\times {{10}^{-5}}\times 10}\] ; \[\alpha =1\times {{10}^{-2}}\]


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