The following are the Vander Waal's parameters for four gases W, X, Y and Z Gas a ( a t m L 2 m o l - 2 ) b ( L m o l - 1 ) W 4.0 0.027 X 8.0 0.030 Y 6.0 0.032 Z 12.0 0.027 Based on given values identify, which one of these gases has the highest critical temperature

Question

The following are the Vander Waal's parameters for four gases W, X, Y and Z Gas a ( a t m L 2 m o l - 2 ) b ( L m o l - 1 ) W 4.0 0.027 X 8.0 0.030 Y 6.0 0.032 Z 12.0 0.027 Based on given values identify, which one of these gases has the highest critical temperature, W, X, Y, Z

MARKS App · Accepted Answer

Critical temperature is the temperature at and above which gases cannot liquefied, no matter how much pressure is applied. For Z gas of given gases, critical temperature is highest T c = 8a 27Rb ⇒ T c ∝ a b ⇒ It is highest for Z

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Gas	$a (a t m L^{2} m o l^{- 2})$	$b (L m o l^{- 1})$
W	4.0	0.027
X	8.0	0.030
Y	6.0	0.032
Z	12.0	0.027