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Liquefaction of Gases and Critical Constants

For a real ga...

Question

For a real gas the P-V curve was experimentally plotted and it had the following appearance. With respect to liquefaction. Choose the correct statement

A

At

T = 500 K

,

P = 40 a t m

, the state will be liquid

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B

At

T = 300 K

,

P = 50 a t m

, the state will be gas

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C

At

T < 300 K

,

P = 20 a t m

, the state will be gas

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D

At

300 K < T < 500 K, P > 50 a t m

, the state will be liquid

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Solution

The correct option is D At $300 K < T < 500 K, P > 50 a t m$ , the state will be liquid
Observations from graph are:
$(a)$ At $T = 500 K, P = 40 a t m$ corresponds to 'a' substance - gas
$(b)$ At $T = 300 K, P = 50 a t m$ corresponds to 'b' substance - liquid
$(c)$ At $T = 300 K, P > 20 a t m$ corresponds to 'c' substance - liquid
$(d)$ At $300 K < T < 500 K, P > 50 a t m$ , corresponds to 'd' substance - liquid
So, correct option is $(d)$ .

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Liquefaction of Gases and Critical Constants

Standard XIII Chemistry

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