MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: R

There are no items in this cart.
Continue Shopping
Menu
prathyusha reddy Grade: 12
        

can u plz tell me when is d compressibility factor (Z) in d vander waal's equation greater than 1 or less than 1??

8 years ago

Answers : (1)

Vijay Luxmi Askiitiansexpert
357 Points
										














Hi Pratyusha,


 


        Compressibility factor:


 


                        Z = PV/nRT


 


                (i)     Z = 1 for ideal gas


 


                (ii)    Z = 1 for real gases at low pressure and high temperature.


 


(iii)    Z > 1 show that it is difficult to copress the gas as compared to ideal gas. It is possible at high pressure. In this case repulsive force dominates. It also indicates lower value of vanderwaal’s constant ‘a’


 


(iv)   Z < 1 shows that the gases are easily compressible as compare dot ideal gas. It is possible at intermediate pressure. In this case attractive forces are dominant. Value of ‘a’ is high.


 


Note ->


 


(i)     In case of H, Z > 1 at 273K and Z increases with the pessure. When temperature is less than 273K, H2 has Z < 1.


 


(ii)    For gases other than hydrogen, at 273K there is decrease in ‘Z’ at initial stage, with increase in pressure, value of ‘Z’ approaches a minimum with increase in pressure.





 

8 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies
  • Complete JEE Main/Advanced Course and Test Series
  • OFFERED PRICE: R 15,000
  • View Details
Get extra R 3,000 off
USE CODE: CART20
Get extra R 520 off
USE CODE: CART20

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details