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. $\frac{\bar{V}}{\overline{V_{id}}}$

Answer 1

Answer: (B)

For ideal gas $\frac{P{\bar{V}}_{id}}{RT}=1$
$\therefore {\bar{V}}_{id}=\frac{RT}{P}$
For real gas , $\bar{V}=RT$
$\frac{P\bar{V}}{RT}=Z$
$\frac{\bar{V}}{\overline{V_{id}}}=Z$