---
title: "Gaseous nitrogen and gaseous hydrogen react in a rigid vessel to produce gaseous ammonia according to the balanced equation below.  \\[\\text{N}_2\\text{(g)} + 3\\text{H}_2\\text{(g)} \\rightarrow 2\\text{NH}_3\\text{(g)}\\]  A particulate representation of the initial reaction mixture in the vessel is shown in the diagram. If the reaction proceeds to completion, which of the following diagrams best represents the contents of the vessel after the reaction?"
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url: "https://nerd-notes.com/ubq/123741/"
date_modified: "2026-09-28T12:02:17+00:00"
---

# Gaseous nitrogen and gaseous hydrogen react in a rigid vessel to produce gaseous ammonia according to the balanced equation below.

\[\text{N}_2\text{(g)} + 3\text{H}_2\text{(g)} \rightarrow 2\text{NH}_3\text{(g)}\]

A particulate representation of the initial reaction mixture in the vessel is shown in the diagram. If the reaction proceeds to completion, which of the following diagrams best represents the contents of the vessel after the reaction?

Gaseous nitrogen and gaseous hydrogen react in a rigid vessel to produce gaseous ammonia according to the balanced equation below.

\[\text{N}_2\text{(g)} + 3\text{H}_2\text{(g)} \rightarrow 2\text{NH}_3\text{(g)}\]

A particulate representation of the initial reaction mixture in the vessel is shown in the diagram. If the reaction proceeds to completion, which of the following diagrams best represents the contents of the vessel after the reaction?

![A rectangular box representing a sealed reaction container. A legend in the upper-right corner indicates: two bonded large solid-black circles represent an \(\text{N}_2\) molecule; two bonded small open-white circles represent an \(\text{H}_2\) molecule. Inside the container, there are exactly \(3\) \(\text{N}_2\) molecules and exactly \(6\) \(\text{H}_2\) molecules, dispersed evenly throughout the interior space. No other particles, labels, text, or annotations appear.](https://nerd-notes.com/wp-content/uploads/ubq-frq-generated/stem-fig-1-1790596936-R010rc.jpg)

- **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/123741/*