The liquefaction behaviour of temporary gases like CO2, approaches that of N2, O2 (permanent gases) as we(1) Beiow absolute zero(2) Above absolute zero(3) Above critical temperature(4) Below critical temperatureand how?

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Q. The liquefaction behaviour of temporary gases like

C O_{2}

approaches that of

N_{2}

O_{2}

(permanent gases) as we go:

Q. The liquefaction behaviour of temporary gases approaches that of permanent gases as we go:

Gases posses charcteristic critical temperature which depends upo the magnitude of intermolecular forces between the particles. Following are the critical temperatures of some gases.

$\begin{matrix} G a s e s & H_{2} & H e & O_{2} & N_{2} C r i t i c a l t e m p e r a t u r e i n K e l v i n & 33.2 & 5.3 & 154.3 & 126 \end{matrix}$

From the above data what would be the order of liquefaction of these gases? Start writing the order from the gas liquefying first

(a) $H_{2}, H e, O_{2}, N_{2}$ (b) $H e, O_{2}, H_{2}, N_{2}$

Q. Gases

H_{2} H e O_{2} N_{2}

Critical temperature(K) 33.2 5.3 154.3 126

From the above data what whould be the order of liquefaction of these gases?
Start writing the order from the gas liquefying first.

Q. Given below are the critical temperatures of a few gases. When the gases are started cooling, which gas will liquefy first and which will liquefy in the end?

Gas	$T_{C} / K$
$N_{2}$	$126.0$
$C O_{2}$	$304.10$
$N H_{3}$	$405.5$
$O_{2}$	$154.3$

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