Question

What is meant by critical volume?

Answer 1

the volume occupied by a unit mass of a gas or vapour in its critical state.

Answer 2

Answer:

Critical volume is the volume of a fixed mass of a substance at critical temperature and pressure,usually one gram molecule of a liquid or gaseous substance at its critical point

Explanation:

Van der Waals equation may be written as

V_c=3.n.b

Vc= Critical Volume,

n= Number of Moles,

b= Van Der Waal's Constant b

it depends on pressure and temperature at critical point  

for example , Water (H2O)

temperature 373.946 °C (647.096 K)

pressure 217.7 atm (22,060 kPa)