Q.

At a given temperature T, gases Ne, Ar, Xe and Kr are found to deviate from ideal gas behaviour. Their equation of state is given as p = RT/V – b at T. Here, “b” is the Van der Waals constant. Which gas will exhibit steepest increase in the plot of compression factor vs pressure?

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a

Ne

b

Xe

c

Ar

d

Kr

answer is B.

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Detailed Solution

Z=1+bRTP Y=mX+C As bslope

We know that the 'b' is the volume occupied by the particles of the gas.

Xe has the highest size so it occupies the highest volume for a certain amount of gases.

Hence, Xe will have the highest slope.

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