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From the following select the correct expression of compressibility factor for $\text {H}_{2}$ behaving as van der Waals gas
Option: 1
$1+\frac{Pb}{RT}$

Option: 2
$1-\frac{Pb}{RT}$

Option: 3
$1+\frac{a}{RTV_{m}}$

Option: 4
$1-\frac{a}{RTV_{m}}$

Answers (1)

best_answer

For $H_{2}$ gas 'a' is negligible

$\therefore P\left ( V_{m}-b \right )=RT$

$\Rightarrow PV_{m}-Pb=RT$

$\Rightarrow Z=1+\frac{Pb}{RT}$

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Rishabh

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