The compressibility factor for a real gas at high pressure is :

  • Option 1)

    1+\dfrac{RT}{pb}

  • Option 2)

    1

  • Option 3)

    1 + pb/RT

  • Option 4)

    1-pb/RT

 

Answers (2)
V Vakul

For \; real \; gases,\left ( P+\frac{a}{V^{2}} \right )(V-b)=RT

At\; high \; pressure,P> > a/V^{2}

Thus \; neglecting\; a/V^{2}\; gives

P(V-b)=RT\; or\; PV=RT+Pb

or\; \frac{PV}{RT}=Z=\frac{RT+Pb}{RT}\Rightarrow Z=1+Pb/RT


Option 1)

1+\dfrac{RT}{pb}

Option 2)

1

Option 3)

1 + pb/RT

Option 4)

1-pb/RT

N neha

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