At a given temperature T, gases Ne, Ar, Xe and Kr are found to deviate from ideal gas behavior.  Their equation of state is given as P=  at T Here, b is the Vander Waal’s constant.  Which gas will exhibit steepest increase in the plot of Z (compression factor) vs P? (a) Kr (b) Ar (c) Xe (d) Ne

Question ID - 52658 :- At a given temperature T, gases Ne, Ar, Xe and Kr are found to deviate from ideal gas behavior.  Their equation of state is given as P=  at T Here, b is the Vander Waal’s constant.  Which gas will exhibit steepest increase in the plot of Z (compression factor) vs P? (a) Kr (b) Ar (c) Xe (d) Ne

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Answer Key : (c) -

P=

⇒PVm−Pb=RT

=1+

⇒Z=1+

Slope of Z vs curve (straight line) =

∴   Higher the value of b, more steep will be the curve and b  size of gas molecules

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