---
title: "A sample of \\(1.00\\text{ mol}\\) of \\(\\text{SO}_2\\text{(g)}\\) is placed in a \\(2.00\\text{ L}\\) rigid container at \\(300\\text{ K}\\). Under these conditions, the volume occupied by the individual gas molecules is negligible, but attractive intermolecular forces between the molecules are significant. Which of the following correctly compares the measured pressure, \\(P_{\\text{measured}}\\), to the ideal pressure, \\(P_{\\text{ideal}}\\), calculated from \\(PV = nRT\\), and provides the correct justification?"
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url: "https://nerd-notes.com/ubq/119989/"
date_modified: "2026-08-21T08:31:39+00:00"
---

# A sample of \(1.00\text{ mol}\) of \(\text{SO}_2\text{(g)}\) is placed in a \(2.00\text{ L}\) rigid container at \(300\text{ K}\). Under these conditions, the volume occupied by the individual gas molecules is negligible, but attractive intermolecular forces between the molecules are significant. Which of the following correctly compares the measured pressure, \(P_{\text{measured}}\), to the ideal pressure, \(P_{\text{ideal}}\), calculated from \(PV = nRT\), and provides the correct justification?

A sample of \(1.00\text{ mol}\) of \(\text{SO}_2\text{(g)}\) is placed in a \(2.00\text{ L}\) rigid container at \(300\text{ K}\). Under these conditions, the volume occupied by the individual gas molecules is negligible, but attractive intermolecular forces between the molecules are significant. Which of the following correctly compares the measured pressure, \(P_{\text{measured}}\), to the ideal pressure, \(P_{\text{ideal}}\), calculated from \(PV = nRT\), and provides the correct justification?

- **A.** \(P_{\text{measured}} < P_{\text{ideal}}\), because attractive forces between \(\text{SO}_2\) molecules reduce the force and frequency of collisions with the container walls.
- **B.** \(P_{\text{measured}} < P_{\text{ideal}}\), because inelastic collisions between \(\text{SO}_2\) molecules decrease the average kinetic energy of the gas sample.
- **C.** \(P_{\text{measured}} > P_{\text{ideal}}\), because attractive forces between \(\text{SO}_2\) molecules increase the speed of the particles as they move toward the container walls.
- **D.** \(P_{\text{measured}} > P_{\text{ideal}}\), because repulsive forces between the electron clouds of adjacent \(\text{SO}_2\) molecules increase the collision rate with the container walls.

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/119989/*