Question

Two gases A & B have critical temperature as 250 K and 125 K respectively. Which one of these can be liquified first and why?

Answer 1

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Answer 2

Answer:

The critical temperature of gas A is higher than gas B; thus, gas A liquified first.

Explanation:

Given data,

The critical temperature of gas A= $250K$

The critical temperature of gas B = $125K$

From the given gases, which gas liquified first =?

As we know,

• The critical temperature is the maximum temperature at which the gas can be liquefied by pressure.

And,

• Critical temperature $\alpha$ the intermolecular force of attraction

Also,

• The intermolecular force of attraction $\alpha$ $\frac{1}{liquification}$

Therefore,

• The higher the critical temperature, the higher the intermolecular force of attraction and, thus, easily the gas can be liquified.

Hence, the critical temperature of gas A is higher than gas B; thus, gas A liquified first.