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(A) The extent of adsorption of a gas on a solid adsorbent like charcoal depends on the ease of liquefaction of the gas.Easily liquefiable gases have

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$He$

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(A) The extent of adsorption of a gas on a solid adsorbent like charcoal depends on the ease of liquefaction of the gas.Easily liquefiable gases have higher critical temperatures $(T_c)$ and are adsorbed to a greater extent.Conversely,gases with lower critical temperatures are difficult to liquefy and show the least adsorption.Comparing the given values: $T_c(He) = 5.2 \ K$,$T_c(CH_4) = 190 \ K$,$T_c(CO_2) = 304.2 \ K$,and $T_c(NH_3) = 405.5 \ K$.Since $He$ has the lowest critical temperature $(5.2 \ K)$,it shows the least adsorption on charcoal.

Gas	Critical temperature $(K)$
$He$	$5.2$
$CH_{4}$	$190$
$CO_{2}$	$304.2$
$NH_{3}$	$405.5$

Given below are the critical temperatures of some of the gases:

Gas Critical temperature $(K)$

$He$ $5.2$

$CH_{4}$ $190$

$CO_{2}$ $304.2$

$NH_{3}$ $405.5$

The gas showing least adsorption on a definite amount of charcoal is:

Similar Questions

Consider the graphs $(I)$,$(II)$ and $(III)$. The correct statement related to the graphs is/are:

Give a reason why a finely divided substance is more effective as an adsorbent.

Which of the following statements is incorrect regarding physisorption?

Why does physical adsorption decrease with an increase in temperature?

Correct for physical adsorption is

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Given below are the critical temperatures of some of the gases: Gas Critical temperature $(K)$ $He$ $5.2$ $CH_{4}$ $190$ $CO_{2}$ $304.2$ $NH_{3}$ $405.5$ The gas showing least adsorption on a definite amount of charcoal is: