If Z is a compressibility factor, van der Waals equation at low pressu

1.	If Z is a compressibility factor, van der Waals equation at low pressure can be written as
A.	\[Z=1-\frac{Pb}{RT}\]
B.	\[Z=1+\frac{Pb}{RT}\]
C.	\[Z=1+\frac{RT}{Pb}\]
D.	\[Z=1-\frac{a}{VRT}\]
Answer» E.

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If Z is a compressibility factor, van der Waals equation at low pressure can be written as

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