Question

Explain how the combined mass of $\mathrm{CO}_{2}$ and $\mathrm{H}_{2} \mathrm{O}$ produced in combustion analysis can be greater than the mass of the sample that is combusted.

Name: Problem 63, Chapter 3: Chemistry
Uploaded: 2020-07-08T21:18:20-08:00
Duration: 1 min 12 s
Channel: Daniel Kim
Description: Explain how the combined mass of CO2 and H2 O produced in combustion analysis can be greater than the mass of the sample that is combusted.

   Explain how the combined mass of $\mathrm{CO}_{2}$ and $\mathrm{H}_{2} \mathrm{O}$ produced in combustion analysis can be greater than the mass of the sample that is combusted.

Chemistry

Julia Burdge 1st Edition

Chapter 3, Problem 63

Instant Answer

Solved by Expert Daniel Kim

07/08/2020

Step 1

A combustion reaction is a chemical reaction that occurs when a substance reacts with oxygen, releasing energy in the form of heat and light. The general form of a combustion reaction can be written as: \[ \text{Hydrocarbon} + \text{O}_{2} \rightarrow Show more…

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Explain how the combined mass of $\mathrm{CO}_{2}$ and $\mathrm{H}_{2} \mathrm{O}$ produced in combustion analysis can be greater than the mass of the sample that is combusted.

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Key Concepts

Conservation of Mass

This principle states that in a chemical reaction, the total mass of the reactants equals the total mass of the products. In combustion reactions, the additional mass in the products comes from reactants (like oxygen) that were not part of the original sample.

Combustion Reaction

Combustion reactions involve a substance (typically containing carbon and hydrogen) reacting with oxygen to form products such as carbon dioxide and water. The oxygen that combines with the sample elements contributes to the mass of the combustion products.

Role of Oxidizing Agents

During combustion, oxygen (often supplied from air) acts as the oxidizing agent. The oxygen atoms from the gas combine with the elements in the combusted sample, resulting in a greater total mass of the reaction products compared to the original sample alone.

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