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  • The behaviour of a real g as is usually depicted by plotting compressibility factor z versus p at a constant temperature This fact can be explained by van der wads equation when-  <

The behaviour of a real g as is usually depicted by plotting compressibility factor z versus p at a constant temperature This fact can be explained by van der wads equation when-
 

Option: 1

 the constant ' a ' is negligible and not ' b '.
 


Option: 2

 the constant ' b ' is negligible and not ' a '
 


Option: 3

 both constant are negligible
 


Option: 4

 both constant are not negligible
 


Answers (1)

best_answer

\mathrm{\left(P+\frac{n^2 a}{v^2}\right)(v-n b)=n R T }
At low pressure, ' b ' can be ignored as the volume of the gas is very high. At high temperature ' a ' can be ignored as the pressor of the gas is high.

\begin{gathered} \mathrm{\therefore P(V-b)=R T ; P V-P b=R T} \\ \mathrm{P V=R T+P b \Rightarrow \frac{P V}{R T}=Z=1+\frac{P b}{R T}} \end{gathered}

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Ritika Jonwal

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