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

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