Equilibrium Question 582
Question: Some solid $ NH_4HS $ is placed in a flask containing 0.5 atm of $ NH_3 $ , what would be pressures of $ NH_3 $ and $ H_2S $ when equilibrium is reached $ NH_4H{S_{(g)}} $ ⇌ $ N{H_{3(g)}}+H_2{S_{(g)}} $ , $ K_{p}=0.11 $ [UPSEAT 2001]
Options:
A) 6.65 atm
B) 0.665 atm
C) 0.0665 atm
D) 66.5 atm
Show Answer
Answer:
Correct Answer: B
Solution:
$ K_{p}=\frac{p^{2}}{4};0.11=\frac{p^{2}}{4}\Rightarrow p^{2}=0.44 $ or $ p=\sqrt{0.44}=0.66444\approx ,0.665,atm $
