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

  • question_answer In weak electrolytic solution, degree of ionization

    A)                 Will be proportional to dilution

    B)                 Will be proportional to concentration of electrolyte

    C)                 Will be proportional to the square root of dilution

    D)                 Will be reciprocal to the dilution

    Correct Answer: C

    Solution :

                    Ostwald?s dilution formula is \[{{\alpha }^{2}}=K(1-\alpha )/C\] but for weak electrolyte a is very small. So that \[(1-\alpha )\] is neglected for weak electrolytes. So for weak electrolyte the dilution formula is \[\alpha =\sqrt{\frac{K}{C}}\].


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