(C) The temperature $30.98 \, ^\circ C$ is the critical temperature of $CO_2$. At this temperature,the (gas + liquid) coexistence region is observed.

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The (gas + liquid) region widens,and it eventually turns into a liquid upon sufficient compression.

(C) The temperature $30.98 \, ^\circ C$ is the critical temperature of $CO_2$. At this temperature,the (gas + liquid) coexistence region is observed. As the pressure increases (compression),the gas gradually liquefies. As the pressure decreases (expansion),the liquid turns back into gas. Beyond the critical point,it exists as a supercritical fluid.

Class 11 Chemistry States of Matter Critical state and Liquefaction of gases

Easy

What happens when $CO_2$ is compressed and expanded at a constant temperature of $30.98 \, ^\circ C$?

A
It remains a gas throughout.
B
It liquefies immediately.
C
The (gas + liquid) region widens,and it eventually turns into a liquid upon sufficient compression.
D
It undergoes sublimation.

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States of Matter

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Critical state and Liquefaction of gases

Explain the liquefaction of real gases and permanent gases.

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However great the pressure,a gas cannot be liquefied above its

Medium

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At which of the following conditions can a gas be liquefied? ($T_c$ and $P_c$ are critical temperature and pressure.)

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The critical temperatures $(T_C)$ of some gases are given below:

Gases $H_2, He, O_2$

$T_C \ (K)$ $33.2, 5.3, 154.3$

Based on the above data,what is the order of liquefaction of these gases? Start writing the order from the gas that liquefies first.

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The critical temperature of $O_2$ is $154.3 \ K$ and the critical temperature of $N_2$ is $126.0 \ K$. Which gas will liquefy first during the liquefaction of air?

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What happens when $CO_2$ is compressed and expanded at a constant temperature of $30.98 \, ^\circ C$?

Similar Questions

Explain the liquefaction of real gases and permanent gases.

However great the pressure,a gas cannot be liquefied above its

At which of the following conditions can a gas be liquefied? ($T_c$ and $P_c$ are critical temperature and pressure.)

The critical temperatures $(T_C)$ of some gases are given below: Gases $H_2, He, O_2$ $T_C \ (K)$ $33.2, 5.3, 154.3$ Based on the above data,what is the order of liquefaction of these gases? Start writing the order from the gas that liquefies first.

The critical temperature of $O_2$ is $154.3 \ K$ and the critical temperature of $N_2$ is $126.0 \ K$. Which gas will liquefy first during the liquefaction of air?

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The critical temperatures $(T_C)$ of some gases are given below:

Gases $H_2, He, O_2$

$T_C \ (K)$ $33.2, 5.3, 154.3$

Based on the above data,what is the order of liquefaction of these gases? Start writing the order from the gas that liquefies first.