Question

Dominance of strong repulsive forces among the molecules of the gas ($Z=$ compressibility factor):

• A. Depends on $Z$ and indicated by $Z=1$
• B. Depends on $Z$ and indicated by $Z>1$
• C. Depends on $Z$ and indicated by $Z<1$
• D. Independent of $Z$

Answer 1

Answer: (B)

Depends on $Z$ and indicated by $Z>1$

$Z>1$ shows that the gas is less compressible than expected. This is due to dominance of strong repulsive forces among the molecules.