CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A manometer attached to a flask contains NH3 gas have no difference in mercury level initially as shown
in diagram. After the sparking into the flask, it have difference of 19 cm in mercury level in two columns.
Calculate % dissociation of ammonia.
128284.png

A
50 %
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
25 %
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
75 %
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
100 %
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B 25 %
ΔP=hρg=19100×13.6×9.8=25.32kPa.
Convert the unit in atm
25.32101.3=0.25atm
Total pressure =1atm+0.25atm=1.25atm
2NH33H2+N2

NH3
H2
N2
Initial pressure (atm)
1
0
0
Equilibrium pressure (atm)
1-2x
3x
x
12x+3x+x=1.25
2x=0.25
Hence, the degree of dissociation is 0.251×100=25%

flag
Suggest Corrections
thumbs-up
0
similar_icon
Similar questions
View More
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Bernoulli's Principle
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon