Question

The critical temperature and pressure of co2 gas are 304.2k calculate a and b

Answer 1

Answer:

T

C

=

27bR

8a

and P

C

=

27b

2

a

∴b=

8

R

×

P

C

T

C

=

8

0.0821

×

72.9

304.2

=0.428litmol

−1

now, n=4N

0

3

4

Πr

3

⇒0.0428=4×6.023×10

23

×

3

4

×Π×r

3

⇒r=2.37×10

−9

dm