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Question
Chemistry
A mixture of NO2 and N2O4 has a vapour density of 38.3 at 300 K. What is the number of moles of NO2 in 100 g of the mixture?
Q. A mixture of
N
O
2
and
N
2
O
4
has a vapour density of
38.3
at
300
K
. What is the number of moles of
N
O
2
in
100
g
of the mixture?
1270
207
States of Matter
Report Error
A
0.043
0%
B
4.4
0%
C
3.4
0%
D
0.437
100%
Solution:
No. of molecules
=
2
×
V
.
d
2
×
38.3
=
76.6
Weight of
N
O
2
=
x
So that weight of
N
2
O
4
=
100
−
x
Hence,
46
x
+
92
100
−
x
=
76.6
100
=
92
2
x
+
100
−
x
=
76.6
100
x
=
20.10
, the number of moles of
N
O
2
=
46
20.10
=
0.437