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) Is independent of Z.

Answer 1

Answer:

Dominance of strong repulsive forces among the molecules of the gas

(b) Depends on Z (the compressibility factor) and Z<1

since, for an ideal gas Z = 1

And, because strong repulsive forces are working which means that the gas cannot be compressed easily and hence the value of the compressibility factor Z decreases than 1.

Hope this helps you !

Answer 2

Dominance of strong repulsive forces among the molecules depends on Z and indicated by Z < 1.

Step by step explanation:

At moderate low pressure,

• Dominance of strong repulsive forces among the molecules of a gas depend on Z

• Z  =  compressibility factor
• And it is indicated by Z<1
• The formula of "Z" is as follows.

         $\bold{Z=\frac{PV}{(PV)_{ideal}}=\frac{PV}{nRT}}$

• For ideal gas Z = 1 , Z >1  for all pressure and low temperature.

Hence, the correct option is c

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