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Gases

At Critical T...

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At Critical Temperature,pressure and volume . The compressibility Factor (Z) Is

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Q. Assertion :The gases

H e

H_{2}

are very different in their behaviour at any temperature and pressure but their compressibility factors are nearly the same at the critical point. Reason: They have nearly the same critical constant.

Q. Compressibility factor

(Z)

is plotted against pressure

(p)

for four different gases

A, B, C

D

. The correct order of critical temperature of the gases shown in the above graph is

Q. Compressibility factor

(Z)

is plotted against pressure

(P)

for four different gases

A, B, C

D

. The correct order of critical temperature of the gases shown in the below graph is

Q. Assertion :Compressibility factor

(Z)

is the ratio of actual molar volume of a gas to the molar volume of it, if it were an ideal gas at the same temperature and pressure. Reason: At high pressure all the gases have

Z < 1

and can be easily compressed.

273 K

temperature and

9 a t m

pressure, the compressibility for gas is 0.9. The volume of

1 m i l l i m o l e

of gas at this temperature and pressure is :

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