---
title: "A student introduces only \\(\\text{N}_2\\text{O}_4\\text{(g)}\\) into an evacuated rigid container at a particular 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)}\\)  | Stage | \\([\\text{N}_2\\text{O}_4]\\) (M) | \\([\\text{NO}_2]\\) (M) | |——-|———————————-|————————-| | Initial | \\(0.375\\) | \\(0\\) | | Equilibrium | — | \\(0.500\\) |  What is the value of \\(K_c\\) at this temperature for the reaction \\(2\\text{NO}_2\\text{(g)} \\rightleftharpoons \\text{N}_2\\text{O}_4\\text{(g)}\\)?"
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url: "https://nerd-notes.com/ubq/119442/"
date_modified: "2026-08-19T12:40:25+00:00"
---

# A student introduces only \(\text{N}_2\text{O}_4\text{(g)}\) into an evacuated rigid container at a particular temperature. The system reaches equilibrium according to the following equation.

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

| Stage | \([\text{N}_2\text{O}_4]\) (M) | \([\text{NO}_2]\) (M) |
|——-|———————————-|————————-|
| Initial | \(0.375\) | \(0\) |
| Equilibrium | — | \(0.500\) |

What is the value of \(K_c\) at this temperature for the reaction \(2\text{NO}_2\text{(g)} \rightleftharpoons \text{N}_2\text{O}_4\text{(g)}\)?

A student introduces only \(\text{N}_2\text{O}_4\text{(g)}\) into an evacuated rigid container at a particular temperature. The system reaches equilibrium according to the following equation.

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

| Stage | \([\text{N}_2\text{O}_4]\) (M) | \([\text{NO}_2]\) (M) |
|-------|----------------------------------|-------------------------|
| Initial | \(0.375\) | \(0\) |
| Equilibrium | — | \(0.500\) |

What is the value of \(K_c\) at this temperature for the reaction \(2\text{NO}_2\text{(g)} \rightleftharpoons \text{N}_2\text{O}_4\text{(g)}\)?

- **A.** \(0.250\)
- **B.** \(0.500\)
- **C.** \(1.50\)
- **D.** \(2.00\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/119442/*