van der waals b for oxygen is 32 cm^3/mol.compute diameter of an o2 molecule?
sundas usman , 4 Years ago
Grade 12th pass
Thermal Physics> van der waals b for oxygen is 32 cm^3/mol...
1 Answers
Arun
Last Activity: 4 Years ago
b=4V
m
=32cm
3
/mol
V
m
=8cm
3
/mol
For one molecule,
V=
6.023×10
23
molecules/mol
8cm
3
/mol
V=1.33×10
−23
cm
3
/molecule
But V=
3
4
πr
3
3
4
πr
3
=1.33×10
−23
cm
3
/molecule
r
3
=3.17×10
−24
cm
3
/molecule
r=1.47×10
−8
cm
The diameter of an O
2
molecule =2r=2×1.47×10
−8
cm=2.94×10
−8
cm
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