1. Tardigrade
  2. Question
  3. Chemistry
  4. Four gases P, Q, R and S have almost same values of ‘b’ but their ‘a’ values (a, b are van der Waals constants) are in the order Q < R < S < P. At a particular temperature, among the four gases the most easily liquefiable one is

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Q. Four gases $P, Q, R$ and $S$ have almost same values of ‘b’ but their ‘a’ values (a, b are van der Waals constants) are in the order $Q < R < S < P$. At a particular temperature, among the four gases the most easily liquefiable one is

WBJEEWBJEE 2014States of Matter

Solution:

Higher the value of $a$, more will be the tendency to get liquefy. Since, value of $a$ is highest for $P_{1}$ thus, $P$ is the most liquefiable gas among the given.