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Byju's Answer
Standard XII
Chemistry
Molecular Speeds - Vrms, Vavg, Vmps
The most prob...
Question
The most probable velocity of a neutron at
20
o
C
is near by:
A
220
m
/
s
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B
2200
m
/
s
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C
22200
m
/
s
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D
22
m
/
s
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Solution
The correct option is
A
2200
m
/
s
T
=
273
+
20
0
C
=
293
K
Mass of 1-mole proton
=
1.67
×
10
−
27
×
6.023
×
10
23
As we know,
U
r
m
s
=
√
2
R
T
M
=
√
2
×
8.314
×
293
1.67
×
10
−
27
×
6.023
×
10
23
=
2200
m
/
s
e
c
.
Hence, the correct option is
B
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