Question

vander waals constant for a gas 0.031 Lmol what is the radius of a gas molecule ​

Answer 1

Explanation:

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