Q. 325.0( 1 Vote )

Compressibility factor, Z, of a gas is given as Z = PV/ nRT

(i) What is the value of Z for an ideal gas?

(ii) For real gas what will be the effect on value of Z above Boyle’s temperature?

Answer :

(i) Compressibility factor, Z is defined as the ratio of the product of pressure and volume to the product of number of moles, gas constant and temperature.

For ideal gas, the value of Z is 1.

Because, we know according to ideal gas equation,

PV = nRT

So, Z =

= 1

(ii) As at the temperature which is above the Boyle’s temperature, PV is greater than nRT for real gases so, the value of Z will also be greater than 1 i.e Z>1, which shows the positive deviation in the compressibility factor above Boyle’s temperature.

Rate this question :

How useful is this solution?

We strive to provide quality solutions. Please rate us to serve you better.

PREVIOUSOne of the assumptions of kinetic theory of gases is that there is no force of attraction between the molecules of a gas. State and explain the evidence that shows that the assumption is not applicable for real gases.NEXTThe critical temperature (T c) and critical pressure (Pc) of CO2 are 30.98°C and 73atm respectively. Can CO2(g) be liquefied at 32°C and 80atm pressure?

Related Videos