Surface Chemistry Question 8
Question 8 - 01 February - Shift 1
Given below are two statements: One is labelled as Assertion $A$ and the other is labelled as Reason R. Assertion A: Amongst $He, Ne, Ar$ and $Kr$; $1 g$ of activated charcoal adsorbs more of $Kr$.
Reason R : The critical volume $V_c(cm^{3} mol^{-1})$ and critical pressure $P_c(atm)$ is highest for Krypton but the compressibility factor at critical point $Z_c$ is lowest for Krypton.
In the light of the above statements, choose the correct answer from the options given below.
(1) A is true but $R$ is false
(2) A is false but $R$ is true
(3) Both A and R are true but R is NOT the correct explanation of $A$
(4) Both A and R are true and R is the correct explanation A
Show Answer
Answer: (1)
Solution:
Adsorption $\propto$ vanderwaal attraction forces
$Z_c=\frac{3}{8}$ for all real gases
