Question

for ammonia gas vonder waals constant a and b are 4.0 liter atm mol 2 and 0.036little-1 respectively calculate critical volume (R=0.0821lit atm degree-1) vc =3​

Answer 1

Answer:

Explanation:

Given a=4.0 atm l  

2

/mol  

2

 

b=0.05 L/mol

The volume correction is given by nb

Mass=80, molar mass=16, n=5

Volume correction=nb=5×0.05=0.25

The volume of molecules=  

4

nb

​  

=  

4

0.25

​  

=0.0625L

Pressure correction factor is give by  

v  

2

 

an  

2

 

​  

 

=  

10  

2

 

4×5  

2

 

​  

=1

Ideal volume of gas=v−nb

=10−0.25

=9.75

(A) → 2

(B) → 3

(C) → 1

(D) → 4.