Equilibrium Question 646
Question: 9.2 grams of $ N_2{O_{4(g)}} $ is taken in a closed one litre vessel and heated till the following equilibrium is reached $ N_2{O_{4(g)}} $ ⇌ $ 2N{O_{2(g)}} $ . At equilibrium, 50% $ N_2{O_{4(g)}} $ is dissociated. What is the equilibrium constant (in mol litre-1) (Molecular weight of $ N_2O_4=92) $ [MP PET 2003]
Options:
A) 0.1
B) 0.4
C) 0.2
D) 2
Show Answer
Answer:
Correct Answer: C
Solution:
$ K_{c}=\frac{{{[NO_2]}^{2}}}{[N_2O_4]} $
$ =\frac{4\times {{(0.05)}^{2}}}{0.05}=4\times 0.05=0.2 $
