Compressibility Factor

Van der Waal’s real gas, act as an ideal gas, at which conditions ?

At which one of the following temperature – pressure conditions the deviation of a gas from ideal behaviour is expected to be minimum ?

The isotherms of a gas are shown below :

Among the following,

(i) At ${\mathrm{T}}_1$, the gas cannot be liquefied

(ii) At point $\mathrm{B}$, liquid starts to appear at ${\mathrm{T}}_2$

(ii) ${\mathrm{T}}_{\mathrm{C}}$ is the highest temperature at which the gas can be liquefied

(iv) At point $\mathrm{A}$, a small increase in pressure condenses the whole system to a liquid

The correct statements are :

For an ideal gas, the compressibility factor is

For one mole of a van der Waals' gas, the compressibility factor $Z=\left(\frac{pV}{RT}\right)$ at a fixed volume will certainly decrease, if
[Given : " a " and " b " are standard parameters for van der Waals' gas]
 

Which of the following represents a plot of compressibility factor $\left(\mathrm{Z}\right)$ vs pressure $\left(\mathrm{P}\right)$ at room temperature for ${\mathrm{O}}_2?$

In the following compressibility factor v/s pressure graph, which is true?

For ${\mathrm{H}}_2$ gas, the compressibility factor, $\mathrm{Z}=\mathrm{PV}/\mathrm{nRT}$ is:

Critical temperature of a gas is ..... Boyle temperature:

At the critical point for ${\mathrm{H}}_2$ gas, value of $\mathrm{Z}=3/8 .$ Then, the value of $\mathrm{Z}$ for the similar conditions of ${\mathrm{CO}}_2, {\mathrm{O}}_2, {\mathrm{SO}}_2$  at their respective critical points will be:

Compressibility factor $\left(\mathrm{Z}\right)$ for ${\mathrm{N}}_2$ at $-23°\mathrm{C}$ and $820 \mathrm{atm}$ pressure is $1.9.$ Find the number of moles of ${\mathrm{N}}_2$ gas required to fill a gas cylinder of $95 \mathrm{L}$ capacity under the given conditions.

Which of the following statements regarding compressibility factor $\mathrm{Z}$, is/are incorrect?

What does Van der Waals gas constant 'a' at higher value indicates?

For one mole of a gas under critical condition, the compressibility factor is-

Correct statement for the graph of real gas is:



 

Compressibility factor for any gas is given by the expression:  $Z=\frac{PV}{RT}$. Considering ideal gas, real gas, and gases at critical state, answer the following questions:

The temperature at which the real gases obey the ideal gas laws over a wide range of pressure is called
 

Which of the following represents a plot of compressibility factor (Z) versus P at room temperature for helium?

It is observed that ${\mathrm{H}}_2$ and He gases always show positive deviation from ideal behaviour i.e., Z > 1. This is because

The volume of gas $\mathrm{A}$ is twice than that of gas $\mathrm{B}.$ The compressibility factor of gas $\mathrm{A}$ is thrice that of gas $\mathrm{B}$ at same temperature. The pressures of the gases for equal number of moles are