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Grade: upto college level
        The compressibility of a gas is less than unity at STP. Therefore,

a. Vm > 22.4 L
b. Vm < 22.4 L
c. Vm = 22.4 L
Vm = 44.8 L
5 years ago

Answers : (3)

Aditi Chauhan
askIITians Faculty
396 Points
							Sol. Compressibility factor (Z) = (V )/V_id  < 1 (given)
⇒ V < 22.4 L ∵ Vid (1 mol) = 22.4 L at STP

						
5 years ago
satyendra kumar
19 Points
							z=molar volume of real gas/molar volume of ideal gas           *molar volume of ideal gas at STP is 22.4L*for z less than 1,molr volume of real gass  should be less than 22.4L
						
2 years ago
Hitanshu Sekhar
11 Points
							
Given that, Z ( compressibility factor ) of a gas
We know that, Z = pV/nRT
For an ideal gas Z=1
At high pressure value of Z increases because repulsion b/w molecules gives a noticable effect making molar volume Vm of the real gas greater than the molar volume of the ideal gas (Vm (ideal gas ) = RT/p ) causing Z to exceed 1.
 
When pressures are lower, attractive forces dominate making Z
So, if we increase the molar volume Vm of a gas, the pressure decreases, as a result attractive forces dominate making Z
 
So, the answer is Vm>22.4L. 
2 years ago
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