The compressibility factor of a gas is less than unity (1) at STP. Therefore,
Correct answer: B. Vm < 22.4 litres
- A. Vm > 22.4 litres
- B. Vm < 22.4 litres
- C. Vm = 22.4 litres
- D. Vm = 44.8 litres
Explanation
The compressibility factor Z = V / V . If Z is less than 1, it means the real molar volume (Vm) is less than the ideal molar volume. At STP, the ideal molar volume is 22.4 L, so for this gas, Vm < 22.4 L.
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About Gases
Gas behaviour is explained through the kinetic molecular theory and the relationships among pressure, volume and temperature. Work includes STP, Boyle's and Charles's laws, absolute zero, the ideal gas equation, and the distinction between ideal and real gases, especially the effects of intermolecular forces and molecular volume.
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