On the basis of data given below predict which of the
Gas $C O_{2}$ $S O_{2}$ $C H_{4}$ $H_{2}$
Critical temp./K 304 630 190 33
following gases shows least adsorption on a definite amount of charcoal?

C O_{2}

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S O_{2}

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C H_{4}

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H_{2}

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Solution

The correct option is C $H_{2}$
The amount of gas adsorbed by a solid depends on the nature of gas. In general, easily liquefiable gases are easily adsorbed.
Here easily liquefiable means the gases with higher critical temperatures are readily adsorbed as van der Waals’ forces are stronger near the critical temperatures.
As per the table, $H_{2}$ is having a lower critical temperature and hence it will be least adsorbed on charcoal.

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Similar questions

Gas	$C O_{2}$	$S O_{2}$	$C H_{4}$	$H_{2}$
Critical temp./K	$304$	$630$	$190$	$33$

Gas	$H_{2}$	$C H_{4}$	$C O_{2}$	$S O_{2}$
Critical Temperature $(K)$	$33$	$190$	$304$	$630$

C O_{2}

S O_{2}

C H_{4}

H_{2}

C O_{2}

S O_{2}

C H_{4}

H_{2}

\begin{matrix} Gas & C O_{2} & S O_{2} & C H_{4} & H_{2} Critical T (K) & 304 & 630 & 190 & 33 \end{matrix}

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