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Question

For a van der Waals gas compressibility factor at 273.15 K is 1.5. The molar volume of this gas at 273.15 K is (assume P = 1 atm)

A
14.93 L
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B
22.4 L
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C
33.6 L
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D
28.2 L
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Solution

The correct option is C 33.6 L
Given: Z=1
T=273.15K
P=1atm
R=0.082Latm1K1

Z=PVRT
1.5=1×V0.082×273.15
Vm=1.5×0.082×273.15
=33.5933.6L
Molar volume of the gas is 33.6L .

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