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At low pressure, the van der Waals equat...

At low pressure, the van der Waals equation is reduced to

A

`Z=(pV_(m))/(RT)=1-(ap)/(RT)`

B

`Z=(pV_(m))/(RT)=1+(b)/(RT)P`

C

`pV_(m)=RT`

D

`Z=(pV_(m))/(RT)=1-(a)/(RT)`

Text Solution

Verified by Experts

The correct Answer is:
A
When pressure is low
`[P+(a)/(V^(2))](V-b)=RT`
or `PV=RT+Pb-(a)/(V^(2)) or (PV)/(RT)=1-(a)/(VRT)`
`Z= -(a)/(VRT)( :. (PV)/(RT)=Z)`
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