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At a low pressure, the van der waals equ...

At a low pressure, the van der waals equation reduces to `(P+(a)/(V^(2)))V+RT`. What is the value of compressibility factor (Z) for this case at this condition?

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Given, `(P+(a)/(V^(2)))V+RT`
or, `PV=(a)/(V)=RT or ,(PV)/(RT)+(a)/(RTV)=1 or, Z=1-(a)/(RTV)`.
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