---
title: "A sample of \\(\\text{N}_2\\text{O}_4\\text{(g)}\\) is placed into a rigid, evacuated container at a constant temperature. The system reaches equilibrium according to the following equation:  \\[ \\text{N}_2\\text{O}_4\\text{(g)} \\rightleftharpoons 2\\text{NO}_2\\text{(g)} \\]  The initial and equilibrium concentrations of the species are shown in the table below.  | Substance | Initial concentration (M) | Equilibrium concentration (M) | | :— | :— | :— | | \\(\\text{N}_2\\text{O}_4\\text{(g)}\\) | \\(0.50\\) | ? | | \\(\\text{NO}_2\\text{(g)}\\) | \\(0.00\\) | \\(0.20\\) |  Based on the data in the table, what is the value of the equilibrium constant, \\(K_c\\), for the reaction at this temperature?"
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url: "https://nerd-notes.com/ubq/123814/"
date_modified: "2026-09-28T12:30:24+00:00"
---

# A sample of \(\text{N}_2\text{O}_4\text{(g)}\) is placed into a rigid, evacuated container at a constant temperature. The system reaches equilibrium according to the following equation:

\[ \text{N}_2\text{O}_4\text{(g)} \rightleftharpoons 2\text{NO}_2\text{(g)} \]

The initial and equilibrium concentrations of the species are shown in the table below.

| Substance | Initial concentration (M) | Equilibrium concentration (M) |
| :— | :— | :— |
| \(\text{N}_2\text{O}_4\text{(g)}\) | \(0.50\) | ? |
| \(\text{NO}_2\text{(g)}\) | \(0.00\) | \(0.20\) |

Based on the data in the table, what is the value of the equilibrium constant, \(K_c\), for the reaction at this temperature?

A sample of \(\text{N}_2\text{O}_4\text{(g)}\) is placed into a rigid, evacuated container at a constant temperature. The system reaches equilibrium according to the following equation:

\[ \text{N}_2\text{O}_4\text{(g)} \rightleftharpoons 2\text{NO}_2\text{(g)} \]

The initial and equilibrium concentrations of the species are shown in the table below.

| Substance | Initial concentration (M) | Equilibrium concentration (M) |
| :--- | :--- | :--- |
| \(\text{N}_2\text{O}_4\text{(g)}\) | \(0.50\) | ? |
| \(\text{NO}_2\text{(g)}\) | \(0.00\) | \(0.20\) |

Based on the data in the table, what is the value of the equilibrium constant, \(K_c\), for the reaction at this temperature?

- **A.** \(0.10\)
- **B.** \(0.50\)
- **C.** \(2.0\)
- **D.** \(10\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/123814/*