Equilibrium Question 140
Question: The vapor density of completely dissociated $ NH_4Cl $ would be [NCERT 1974]
Options:
A) Slight less than half that of $ NH_4Cl $
B) Half that of $ NH_4Cl $
C) Double that of $ NH_4Cl $
D) Determined by the amount of solid $ NH_4Cl $ in the experiment
Show Answer
Answer:
Correct Answer: B
Solution:
$ \frac{Normalmolecularweight}{experimentalmolecularwt\text{.}} $ = 1 + a $ NH_4Cl $ ⇌ $ NH_3+HCl $
$ \because \alpha =1 $ \Experimental Molecular wt = $ \frac{nor\text{.mol}\text{.wt}\text{.}}{2} $
