Equilibrium Question 353
Question: The degree of dissociation of $ 0.1,M,HCN $ solution is 0.01%. Its ionisation constant would be [RPMT 1999]
Options:
A) $ {10^{-3}} $
B) $ {10^{-5}} $
C) $ {10^{-7}} $
D) $ {10^{-9}} $
Show Answer
Answer:
Correct Answer: D
Solution:
$ HA $ ⇌ $ {H^{+}}+{A^{-}} $
$ K=Ca^{2}=0.1\times {{({10^{-4}})}^{2}}={10^{-9}} $
