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Compressibili...

Question

Compressibility factor $(Z = \frac{P V}{n R T})$ is plotted against pressure as shown below:

What is the correct order for the liquefiability of the gases shown in the above graph?

H_{2} < N_{2} < C H_{4} < C O_{2}

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C O_{2} < C H_{4} < N_{2} < H_{2}

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H_{2} < C H_{4} < N_{2} < C O_{2}

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C H_{4} < H_{2} < N_{2} < C O_{2}

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Solution

The correct option is A $H_{2} < N_{2} < C H_{4} < C O_{2}$
$Z < 1$ shows the dominance of attractive forces. Lower the value of $Z$ at a pressure, easier will be its liquefaction.

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Similar questions

The volumes of gases $H_{2}, C H_{4}, C O_{2} a n d N H_{3}$ absorbed by 1 g of charcoal at 288 K are in the order:

0^{o} C

C O_{2}, C H_{4}

N_{2}

H_{2}

Z > 1

H_{2}

C O_{2}, C H_{4}

N_{2}

a

\begin{matrix} Gas & a (L^{2} a t m m o l^{- 2}) N_{2} & 1.390 O_{2} & 1.360 N H_{3} & 4.170 C H_{4} & 2.253 \end{matrix}

C O_{2}, C H_{4}, C O, N H_{3}, water vapour, N_{2} O, O_{2}, S O_{2}, N_{2}, hydrofluorocarbons, O_{3}, C F C

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