gases possess characteristic critical temperature which depends upon the magnitude of intermolecular forces between the gas particles. Critical temperatures of ammonia and CO₂ are 405.5K and 304.10 K respectively. Which of these gases will liquify at 350K? Give reasons.

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Solution

Dear Student,

Critical temperature is the maximum temperature at which a gas can be liquified. Above this temperature, a gas cannot exist in liquid state. Now, critical temperature of NH₃ is 405.5 K and critical temperature of CO₂ is 304.10 K. This means NH₃ cannot be liquified above 405.5 K and CO₂ cannot be liquified above 304.10 K . Therefore, at 350 K NH₃ can be liquified whereas CO₂ cannot.

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Similar questions

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

Q. Assertion :Greater is critical temperature more easily a gas can be liquified. Reason: Critical temperature depends on the magnitude of intermolecular forces of attraction between the gas.

Q. Assertion :On cooling, ammonia liquifies first whereas

C O_{2}

requires more cooling. Reason: Critical temperatures of ammonia and carbon dioxide are

405.5 K

and

304.10 K

respectively.

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. Assertion :All the gases should be cooled below their critical temperature for liquification. Reason: Cooling slows down the movement of molecules therefore, intermolecular forces may hold the slowly moving molecules together and the gas liquifies.

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gases possess characteristic critical temperature which depends upon the magnitude of intermolecular forces between the gas particles. Critical temperatures of ammonia and CO2​ are 405.5K and 304.10 K respectively. Which of these gases will liquify at 350K? Give reasons.

gases possess characteristic critical temperature which depends upon the magnitude of intermolecular forces between the gas particles. Critical temperatures of ammonia and CO₂ are 405.5K and 304.10 K respectively. Which of these gases will liquify at 350K? Give reasons.