States of Matter - Result Question 15

####15. The given graph represent the variations of Z (compressibility factor (Z)=pVnRT ) versus p, for three real gases A,B and C. Identify the only incorrect statement.

(a) For the gas A,a=0 and its dependence on p is linear at all pressure

(b) For the gas B,b=0 and its dependence on p is linear at all pressure

(c) For the gas C, which is typical real gas for which neither a nor b=0. By knowing the minima and the point of intersection, with Z=1,a and b can be calculated

(d) At high pressure, the slope is positive for all real gases

Show Answer

Solution:

  1. Option (b) is incorrect statement because at high pressure slope of the line will change from negative to positive.


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