Question

If $\bar{V}$is the observed molar volume of real gas and ${\bar{V}}_{id}$is the molar volume of an ideal gas then Z is ?

• A. $\bar{V}{\bar{V}}_{id}$
• B. $\frac{\bar{V}}{{\bar{V}}_{id}}$
• C. $\frac{{\bar{V}}_{id}}{\bar{V}}$
• D. $\frac{{\bar{V}}^{2}}{{\bar{V}}_{id}}$

Answer 1

Answer: (B)

$\frac{\bar{V}}{{\bar{V}}_{id}}$

Answer 2

For ideal gas $\frac{P{\bar{V}}_{id}}{RT}$= 1

\ ${\bar{V}}_{id}$= $\frac{RT}{P}$

For real gas, $P\bar{V} = RT$

$\frac{P\bar{V}}{RT} = Z$

$\frac{\bar{V}}{{\bar{V}}_{id}} = Z$