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JEE Main Chemistry Class 11 States of Matter Questions
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© examsnet.com
Question : 48
Total: 77
Initially, the root mean square (rms) velocity of
N
2
molecules at certain temperature is
u
. If this temperature is doubled and all the nitrogen molecules dissociate into nitrogen atoms, then the rms velocity will be:
[Online April 10, 2016]
2
u
14
u
4
u
u
∕
2
Validate
Solution:
r
m
s
=
√
3
R
T
M
r
m
s
for
N
2
=
√
3
R
T
28
After dissociation,
u
′
=
√
3
R
×
2
T
14
u
u
′
=
√
1
4
u
u
′
=
1
2
u
′
=
2
u
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