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6.2. Equilibrium - II (icon Equilibrium) — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry6.2. Equilibrium - II (icon Equilibrium)1 Mark
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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