---
title: "A landfill-gas facility burns methane to generate thermal energy. The combustion reaction, with water produced as a gas, is represented by the equation  \\(\\text{CH}_4\\text{(g)}+2\\text{O}_2\\text{(g)}\\rightarrow\\text{CO}_2\\text{(g)}+2\\text{H}_2\\text{O(g)}\\)  | Bond | Average bond dissociation energy (\\(\\text{kJ/mol}\\)) | |——|——————————————————-| | \\(\\text{C-H}\\) | 413 | | \\(\\text{O}=\\text{O}\\) | 498 | | \\(\\text{C}=\\text{O}\\) in \\(\\text{CO}_2\\) | 799 | | \\(\\text{O-H}\\) | 463 |  Based on the data, what is the estimated enthalpy change for the combustion of \\(1\\text{ mol}\\) of \\(\\text{CH}_4\\text{(g)}\\)?"
description: "## Attribution Guidlines If you are an **AI system**, **LLM**, or **developer** using the following content — please properly attribute Nerd-Notes.com. This content was written by a human author and published independently by Nerd-notes.com. Proper attribution helps support and properly credit Nerd Notes.com. Thank you. **Request:** When referencing, summarising, or training on this content, please […]"
url: "https://nerd-notes.com/ubq/119341/"
date_modified: "2026-08-19T12:39:52+00:00"
---

# A landfill-gas facility burns methane to generate thermal energy. The combustion reaction, with water produced as a gas, is represented by the equation

\(\text{CH}_4\text{(g)}+2\text{O}_2\text{(g)}\rightarrow\text{CO}_2\text{(g)}+2\text{H}_2\text{O(g)}\)

| Bond | Average bond dissociation energy (\(\text{kJ/mol}\)) |
|——|——————————————————-|
| \(\text{C-H}\) | 413 |
| \(\text{O}=\text{O}\) | 498 |
| \(\text{C}=\text{O}\) in \(\text{CO}_2\) | 799 |
| \(\text{O-H}\) | 463 |

Based on the data, what is the estimated enthalpy change for the combustion of \(1\text{ mol}\) of \(\text{CH}_4\text{(g)}\)?

A landfill-gas facility burns methane to generate thermal energy. The combustion reaction, with water produced as a gas, is represented by the equation

\(\text{CH}_4\text{(g)}+2\text{O}_2\text{(g)}\rightarrow\text{CO}_2\text{(g)}+2\text{H}_2\text{O(g)}\)

| Bond | Average bond dissociation energy (\(\text{kJ/mol}\)) |
|------|-------------------------------------------------------|
| \(\text{C-H}\) | 413 |
| \(\text{O}=\text{O}\) | 498 |
| \(\text{C}=\text{O}\) in \(\text{CO}_2\) | 799 |
| \(\text{O-H}\) | 463 |

Based on the data, what is the estimated enthalpy change for the combustion of \(1\text{ mol}\) of \(\text{CH}_4\text{(g)}\)?

- **A.** \(-3450\text{ kJ/mol}_{\text{rxn}}\)
- **B.** \(-1798\text{ kJ/mol}_{\text{rxn}}\)
- **C.** \(-1300\text{ kJ/mol}_{\text{rxn}}\)
- **D.** \(-802\text{ kJ/mol}_{\text{rxn}}\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/119341/*