---
title: "A student investigates the gas-phase reaction \\(\\text{X}_2\\text{(g)} + \\text{Y}_2\\text{(g)} \\rightleftharpoons 2\\text{XY(g)}\\) at a constant temperature. The reaction has an equilibrium constant \\(K \\gg 1\\). Equal initial amounts of \\(\\text{X}_2\\text{(g)}\\) and \\(\\text{Y}_2\\text{(g)}\\) are placed into a closed container and allowed to reach equilibrium. Which of the following particulate diagrams best represents the mixture at equilibrium?"
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url: "https://nerd-notes.com/ubq/119540/"
date_modified: "2026-08-19T12:44:50+00:00"
---

# A student investigates the gas-phase reaction \(\text{X}_2\text{(g)} + \text{Y}_2\text{(g)} \rightleftharpoons 2\text{XY(g)}\) at a constant temperature. The reaction has an equilibrium constant \(K \gg 1\). Equal initial amounts of \(\text{X}_2\text{(g)}\) and \(\text{Y}_2\text{(g)}\) are placed into a closed container and allowed to reach equilibrium. Which of the following particulate diagrams best represents the mixture at equilibrium?

A student investigates the gas-phase reaction \(\text{X}_2\text{(g)} + \text{Y}_2\text{(g)} \rightleftharpoons 2\text{XY(g)}\) at a constant temperature. The reaction has an equilibrium constant \(K \gg 1\). Equal initial amounts of \(\text{X}_2\text{(g)}\) and \(\text{Y}_2\text{(g)}\) are placed into a closed container and allowed to reach equilibrium. Which of the following particulate diagrams best represents the mixture at equilibrium?

- **A.** Diagram A
- **B.** Diagram B
- **C.** Diagram C
- **D.** Diagram D

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/119540/*