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Class 11 NEET Chemistry Some Basic Concepts Of Chemistry
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© examsnet.com
Question : 45
Total: 60
0.24
g
of a volatile gas, upon vaporisation, gives
45
m
L
vapour at NTP. What will be the vapour density of the substance? (Density of
H
2
=
0.089
g
/
L
)
(1996)
95.93
59.93
95.39
5.993
Validate
Solution:
Weight of gas
=
0.24
g
Volume of gas
=
45
m
L
=
0.045
litre and density of
H
2
=
0.089
weight of
45
m
L
of
H
2
=
density
×
volume
=
0.089
×
0.045
=
4.005
×
10
−
3
g
Therefore, vapour density
=
Weight of certain volume of substance
Weight of same volume of hydrogen
=
0.24
4.005
×
10
−
3
=
59.93
© examsnet.com
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