Equilibrium Question 356
Question: In weak electrolytic solution, degree of ionization
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
Show Answer
Answer:
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}} $ .
