Statement I: At Boyle temperature, the compressibility factor of a real gas, Z ≥ 1. Statement II: All the gases tend to approach a value Z = 1, when the pressure of gas approaches to zero value at any

Question

Statement I: At Boyle temperature, the compressibility factor of a real gas, Z ≥ 1. Statement II: All the gases tend to approach a value Z = 1, when the pressure of gas approaches to zero value at any temperature.

Prashant Kotian · Accepted Answer

Correct answer: B. At the Boyle temperature, Z is equal to 1 over a wide range of low pressures, and Z ≥ 1 at higher pressures (Statement I is correct). As pressure approaches zero, the volume of any gas becomes extremely large, rendering both molecular volume and intermolecular attractions negligible, so Z approaches 1 for all gases (Statement II is correct). However, Statement II is a general limit and does not explain the specific behavior at the Boyle temperature.

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