In weak electrolytic solution, degree of ionization - Vidyadip

MCQ

In weak electrolytic solution, degree of ionization

A
Will be proportional to dilution
B
Will be proportional to concentration of electrolyte
✓
Will be proportional to the square root of dilution
D
Will be reciprocal to the dilution

✓

Answer

Correct option: C.

Will be proportional to the square root of dilution

(c) Ostwald’s dilution formula is ${\alpha ^2} = K(1 - \alpha )/C$ but for weak electrolyte $\alpha $ 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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