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Question: Answered & Verified by Expert
In weak electrolytic solution, degree of ionization
ChemistryIonic EquilibriumJEE Main
Options:
  • 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
Solution:
1520 Upvotes Verified Answer
The correct answer is: Will be proportional to the square root of dilution
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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